Show warning when using prerelease version

Implements #1948

- Add macro `CLIENT_VERSION_IS_RELEASE` to clientversion.h
- When running a prerelease (the above macro is `false`):
  - In UI, show an orange warning bar at the top. This will be used for other
    warnings (and alerts) as well, instead of the status bar.
  - For `bitcoind`, show the warning in the "errors" field in `getinfo`
    response.

1 files changed, 277 insertions, 256 deletions

diff --git a/src/qt/forms/overviewpage.ui b/src/qt/forms/overviewpage.ui
index 98cb63e9ff..4c4dec6c9c 100644
--- a/src/qt/forms/overviewpage.ui
+++ b/src/qt/forms/overviewpage.ui
@@ -13,282 +13,303 @@
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <layout class="QHBoxLayout" name="horizontalLayout" stretch="1,1">
+  <layout class="QVBoxLayout" name="topLayout">
    <item>
-    <layout class="QVBoxLayout" name="verticalLayout_2">
+    <widget class="QLabel" name="labelAlerts">
+     <property name="visible">
+      <bool>false</bool>
+     </property>
+     <property name="styleSheet">
+      <string notr="true">background-color: qlineargradient(x1: 0, y1: 0, x2: 1, y2: 0, stop:0 #F0D0A0, stop:1 #F8D488);  color:#000000
+</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+     <property name="margin">
+      <number>3</number>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout" stretch="1,1">
      <item>
-      <widget class="QFrame" name="frame">
-       <property name="frameShape">
-        <enum>QFrame::StyledPanel</enum>
-       </property>
-       <property name="frameShadow">
-        <enum>QFrame::Raised</enum>
-       </property>
-       <layout class="QVBoxLayout" name="verticalLayout_4">
-        <item>
-         <layout class="QHBoxLayout" name="horizontalLayout_4">
+      <layout class="QVBoxLayout" name="verticalLayout_2">
+       <item>
+        <widget class="QFrame" name="frame">
+         <property name="frameShape">
+          <enum>QFrame::StyledPanel</enum>
+         </property>
+         <property name="frameShadow">
+          <enum>QFrame::Raised</enum>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout_4">
           <item>
-           <widget class="QLabel" name="label_5">
-            <property name="font">
-             <font>
-              <pointsize>11</pointsize>
-              <weight>75</weight>
-              <bold>true</bold>
-             </font>
-            </property>
-            <property name="text">
-             <string>Wallet</string>
-            </property>
-           </widget>
+           <layout class="QHBoxLayout" name="horizontalLayout_4">
+            <item>
+             <widget class="QLabel" name="label_5">
+              <property name="font">
+               <font>
+                <pointsize>11</pointsize>
+                <weight>75</weight>
+                <bold>true</bold>
+               </font>
+              </property>
+              <property name="text">
+               <string>Wallet</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QLabel" name="labelWalletStatus">
+              <property name="toolTip">
+               <string>The displayed information may be out of date. Your wallet automatically synchronizes with the Bitcoin network after a connection is established, but this process has not completed yet.</string>
+              </property>
+              <property name="styleSheet">
+               <string notr="true">QLabel { color: red; }</string>
+              </property>
+              <property name="text">
+               <string notr="true">(out of sync)</string>
+              </property>
+              <property name="alignment">
+               <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacer_2">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
           </item>
           <item>
-           <widget class="QLabel" name="labelWalletStatus">
-            <property name="toolTip">
-             <string>The displayed information may be out of date. Your wallet automatically synchronizes with the Bitcoin network after a connection is established, but this process has not completed yet.</string>
-            </property>
-            <property name="styleSheet">
-             <string notr="true">QLabel { color: red; }</string>
-            </property>
-            <property name="text">
-             <string notr="true">(out of sync)</string>
-            </property>
-            <property name="alignment">
-             <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
-            </property>
-           </widget>
-          </item>
-          <item>
-           <spacer name="horizontalSpacer_2">
-            <property name="orientation">
-             <enum>Qt::Horizontal</enum>
-            </property>
-            <property name="sizeHint" stdset="0">
-             <size>
-              <width>40</width>
-              <height>20</height>
-             </size>
-            </property>
-           </spacer>
-          </item>
-         </layout>
-        </item>
-        <item>
-         <layout class="QFormLayout" name="formLayout_2">
-          <property name="fieldGrowthPolicy">
-           <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
-          </property>
-          <property name="horizontalSpacing">
-           <number>12</number>
-          </property>
-          <property name="verticalSpacing">
-           <number>12</number>
-          </property>
-          <item row="0" column="0">
-           <widget class="QLabel" name="label">
-            <property name="text">
-             <string>Balance:</string>
-            </property>
-           </widget>
-          </item>
-          <item row="0" column="1">
-           <widget class="QLabel" name="labelBalance">
-            <property name="font">
-             <font>
-              <weight>75</weight>
-              <bold>true</bold>
-             </font>
-            </property>
-            <property name="cursor">
-             <cursorShape>IBeamCursor</cursorShape>
-            </property>
-            <property name="toolTip">
-             <string>Your current balance</string>
-            </property>
-            <property name="text">
-             <string notr="true">0 BTC</string>
-            </property>
-            <property name="textInteractionFlags">
-             <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
-            </property>
-           </widget>
-          </item>
-          <item row="1" column="0">
-           <widget class="QLabel" name="label_3">
-            <property name="text">
-             <string>Unconfirmed:</string>
-            </property>
-           </widget>
-          </item>
-          <item row="1" column="1">
-           <widget class="QLabel" name="labelUnconfirmed">
-            <property name="font">
-             <font>
-              <weight>75</weight>
-              <bold>true</bold>
-             </font>
-            </property>
-            <property name="cursor">
-             <cursorShape>IBeamCursor</cursorShape>
-            </property>
-            <property name="toolTip">
-             <string>Total of transactions that have yet to be confirmed, and do not yet count toward the current balance</string>
-            </property>
-            <property name="text">
-             <string notr="true">0 BTC</string>
-            </property>
-            <property name="textInteractionFlags">
-             <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
-            </property>
-           </widget>
-          </item>
-          <item row="3" column="0">
-           <widget class="QLabel" name="label_2">
-            <property name="text">
-             <string>Number of transactions:</string>
-            </property>
-           </widget>
-          </item>
-          <item row="3" column="1">
-           <widget class="QLabel" name="labelNumTransactions">
-            <property name="toolTip">
-             <string>Total number of transactions in wallet</string>
-            </property>
-            <property name="text">
-             <string notr="true">0</string>
-            </property>
-           </widget>
-          </item>
-          <item row="2" column="0">
-           <widget class="QLabel" name="labelImmatureText">
-            <property name="text">
-             <string>Immature:</string>
-            </property>
-           </widget>
-          </item>
-          <item row="2" column="1">
-           <widget class="QLabel" name="labelImmature">
-            <property name="font">
-             <font>
-              <weight>75</weight>
-              <bold>true</bold>
-             </font>
-            </property>
-            <property name="toolTip">
-             <string>Mined balance that has not yet matured</string>
-            </property>
-            <property name="text">
-             <string notr="true">0 BTC</string>
-            </property>
-            <property name="textInteractionFlags">
-             <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
-            </property>
-           </widget>
+           <layout class="QFormLayout" name="formLayout_2">
+            <property name="fieldGrowthPolicy">
+             <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
+            </property>
+            <property name="horizontalSpacing">
+             <number>12</number>
+            </property>
+            <property name="verticalSpacing">
+             <number>12</number>
+            </property>
+            <item row="0" column="0">
+             <widget class="QLabel" name="label">
+              <property name="text">
+               <string>Balance:</string>
+              </property>
+             </widget>
+            </item>
+            <item row="0" column="1">
+             <widget class="QLabel" name="labelBalance">
+              <property name="font">
+               <font>
+                <weight>75</weight>
+                <bold>true</bold>
+               </font>
+              </property>
+              <property name="cursor">
+               <cursorShape>IBeamCursor</cursorShape>
+              </property>
+              <property name="toolTip">
+               <string>Your current balance</string>
+              </property>
+              <property name="text">
+               <string notr="true">0 BTC</string>
+              </property>
+              <property name="textInteractionFlags">
+               <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+              </property>
+             </widget>
+            </item>
+            <item row="1" column="0">
+             <widget class="QLabel" name="label_3">
+              <property name="text">
+               <string>Unconfirmed:</string>
+              </property>
+             </widget>
+            </item>
+            <item row="1" column="1">
+             <widget class="QLabel" name="labelUnconfirmed">
+              <property name="font">
+               <font>
+                <weight>75</weight>
+                <bold>true</bold>
+               </font>
+              </property>
+              <property name="cursor">
+               <cursorShape>IBeamCursor</cursorShape>
+              </property>
+              <property name="toolTip">
+               <string>Total of transactions that have yet to be confirmed, and do not yet count toward the current balance</string>
+              </property>
+              <property name="text">
+               <string notr="true">0 BTC</string>
+              </property>
+              <property name="textInteractionFlags">
+               <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+              </property>
+             </widget>
+            </item>
+            <item row="3" column="0">
+             <widget class="QLabel" name="label_2">
+              <property name="text">
+               <string>Number of transactions:</string>
+              </property>
+             </widget>
+            </item>
+            <item row="3" column="1">
+             <widget class="QLabel" name="labelNumTransactions">
+              <property name="toolTip">
+               <string>Total number of transactions in wallet</string>
+              </property>
+              <property name="text">
+               <string notr="true">0</string>
+              </property>
+             </widget>
+            </item>
+            <item row="2" column="0">
+             <widget class="QLabel" name="labelImmatureText">
+              <property name="text">
+               <string>Immature:</string>
+              </property>
+             </widget>
+            </item>
+            <item row="2" column="1">
+             <widget class="QLabel" name="labelImmature">
+              <property name="font">
+               <font>
+                <weight>75</weight>
+                <bold>true</bold>
+               </font>
+              </property>
+              <property name="toolTip">
+               <string>Mined balance that has not yet matured</string>
+              </property>
+              <property name="text">
+               <string notr="true">0 BTC</string>
+              </property>
+              <property name="textInteractionFlags">
+               <set>Qt::LinksAccessibleByMouse|Qt::TextSelectableByKeyboard|Qt::TextSelectableByMouse</set>
+              </property>
+             </widget>
+            </item>
+           </layout>
           </item>
          </layout>
-        </item>
-       </layout>
-      </widget>
-     </item>
-     <item>
-      <spacer name="verticalSpacer">
-       <property name="orientation">
-        <enum>Qt::Vertical</enum>
-       </property>
-       <property name="sizeHint" stdset="0">
-        <size>
-         <width>20</width>
-         <height>40</height>
-        </size>
-       </property>
-      </spacer>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
      </item>
-    </layout>
-   </item>
-   <item>
-    <layout class="QVBoxLayout" name="verticalLayout_3">
      <item>
-      <widget class="QFrame" name="frame_2">
-       <property name="frameShape">
-        <enum>QFrame::StyledPanel</enum>
-       </property>
-       <property name="frameShadow">
-        <enum>QFrame::Raised</enum>
-       </property>
-       <layout class="QVBoxLayout" name="verticalLayout">
-        <item>
-         <layout class="QHBoxLayout" name="horizontalLayout_2">
+      <layout class="QVBoxLayout" name="verticalLayout_3">
+       <item>
+        <widget class="QFrame" name="frame_2">
+         <property name="frameShape">
+          <enum>QFrame::StyledPanel</enum>
+         </property>
+         <property name="frameShadow">
+          <enum>QFrame::Raised</enum>
+         </property>
+         <layout class="QVBoxLayout" name="verticalLayout">
           <item>
-           <widget class="QLabel" name="label_4">
-            <property name="text">
-             <string>&lt;b&gt;Recent transactions&lt;/b&gt;</string>
-            </property>
-           </widget>
+           <layout class="QHBoxLayout" name="horizontalLayout_2">
+            <item>
+             <widget class="QLabel" name="label_4">
+              <property name="text">
+               <string>&lt;b&gt;Recent transactions&lt;/b&gt;</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QLabel" name="labelTransactionsStatus">
+              <property name="toolTip">
+               <string>The displayed information may be out of date. Your wallet automatically synchronizes with the Bitcoin network after a connection is established, but this process has not completed yet.</string>
+              </property>
+              <property name="styleSheet">
+               <string notr="true">QLabel { color: red; }</string>
+              </property>
+              <property name="text">
+               <string notr="true">(out of sync)</string>
+              </property>
+              <property name="alignment">
+               <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacer">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
           </item>
           <item>
-           <widget class="QLabel" name="labelTransactionsStatus">
-            <property name="toolTip">
-             <string>The displayed information may be out of date. Your wallet automatically synchronizes with the Bitcoin network after a connection is established, but this process has not completed yet.</string>
-            </property>
+           <widget class="QListView" name="listTransactions">
             <property name="styleSheet">
-             <string notr="true">QLabel { color: red; }</string>
+             <string notr="true">QListView { background: transparent; }</string>
             </property>
-            <property name="text">
-             <string notr="true">(out of sync)</string>
+            <property name="frameShape">
+             <enum>QFrame::NoFrame</enum>
             </property>
-            <property name="alignment">
-             <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+            <property name="verticalScrollBarPolicy">
+             <enum>Qt::ScrollBarAlwaysOff</enum>
             </property>
-           </widget>
-          </item>
-          <item>
-           <spacer name="horizontalSpacer">
-            <property name="orientation">
-             <enum>Qt::Horizontal</enum>
+            <property name="horizontalScrollBarPolicy">
+             <enum>Qt::ScrollBarAlwaysOff</enum>
             </property>
-            <property name="sizeHint" stdset="0">
-             <size>
-              <width>40</width>
-              <height>20</height>
-             </size>
+            <property name="selectionMode">
+             <enum>QAbstractItemView::NoSelection</enum>
             </property>
-           </spacer>
+           </widget>
           </item>
          </layout>
-        </item>
-        <item>
-         <widget class="QListView" name="listTransactions">
-          <property name="styleSheet">
-           <string notr="true">QListView { background: transparent; }</string>
-          </property>
-          <property name="frameShape">
-           <enum>QFrame::NoFrame</enum>
-          </property>
-          <property name="verticalScrollBarPolicy">
-           <enum>Qt::ScrollBarAlwaysOff</enum>
-          </property>
-          <property name="horizontalScrollBarPolicy">
-           <enum>Qt::ScrollBarAlwaysOff</enum>
-          </property>
-          <property name="selectionMode">
-           <enum>QAbstractItemView::NoSelection</enum>
-          </property>
-         </widget>
-        </item>
-       </layout>
-      </widget>
-     </item>
-     <item>
-      <spacer name="verticalSpacer_2">
-       <property name="orientation">
-        <enum>Qt::Vertical</enum>
-       </property>
-       <property name="sizeHint" stdset="0">
-        <size>
-         <width>20</width>
-         <height>40</height>
-        </size>
-       </property>
-      </spacer>
+        </widget>
+       </item>
+       <item>
+        <spacer name="verticalSpacer_2">
+         <property name="orientation">
+          <enum>Qt::Vertical</enum>
+         </property>
+         <property name="sizeHint" stdset="0">
+          <size>
+           <width>20</width>
+           <height>40</height>
+          </size>
+         </property>
+        </spacer>
+       </item>
+      </layout>
      </item>
     </layout>
    </item>