[QT] use alert icon with tooltip insted of "(out of sync)" text

# Conflicts:
#	src/qt/forms/overviewpage.ui
#	src/qt/overviewpage.cpp

doc/assets-attribution.md

@@ -22,6 +22,7 @@ The following is a list of assets used in the bitcoin source and their proper at
     src/qt/res/icons/receive.png, src/qt/res/icons/remove.png,
     src/qt/res/icons/send.png, src/qt/res/icons/synced.png,
     src/qt/res/icons/transaction*.png, src/qt/res/icons/tx_output.png,
+    src/qt/res/icons/warning.png
 
 Jonas Schnelli
 -----------------------

src/Makefile.qt.include

@@ -256,6 +256,7 @@ RES_ICONS = \
   qt/res/icons/tx_input.png \
   qt/res/icons/tx_output.png \
   qt/res/icons/tx_mined.png \
+  qt/res/icons/warning.png \
   qt/res/icons/verify.png
 
 BITCOIN_QT_CPP = \

src/qt/bitcoin.qrc

@@ -45,6 +45,7 @@
         <file alias="about">res/icons/about.png</file>
         <file alias="about_qt">res/icons/about_qt.png</file>
         <file alias="verify">res/icons/verify.png</file>
+        <file alias="warning">res/icons/warning.png</file>
     </qresource>
     <qresource prefix="/movies">
         <file alias="spinner-000">res/movies/spinner-000.png</file>

src/qt/forms/overviewpage.ui

@@ -59,21 +59,35 @@
              </widget>
             </item>
             <item>
-             <widget class="QLabel" name="labelWalletStatus">
-              <property name="cursor">
-               <cursorShape>WhatsThisCursor</cursorShape>
+             <widget class="QPushButton" name="labelWalletStatus">
+              <property name="enabled">
+               <bool>false</bool>
+              </property>
+              <property name="maximumSize">
+               <size>
+                <width>30</width>
+                <height>16777215</height>
+               </size>
               </property>
               <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The displayed information may be out of date.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>
+               <string/>
               </property>
-              <property name="alignment">
-               <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+              <property name="icon">
+               <iconset resource="../bitcoin.qrc">
+                <normaloff>:/icons/warning</normaloff>
+                <disabledoff>:/icons/warning</disabledoff>:/icons/warning</iconset>
+              </property>
+              <property name="iconSize">
+               <size>
+                <width>24</width>
+                <height>24</height>
+               </size>
+              </property>
+              <property name="flat">
+               <bool>true</bool>
               </property>
              </widget>
             </item>
@@ -431,21 +445,35 @@
              </widget>
             </item>
             <item>
-             <widget class="QLabel" name="labelTransactionsStatus">
-              <property name="cursor">
-               <cursorShape>WhatsThisCursor</cursorShape>
+             <widget class="QPushButton" name="labelTransactionsStatus">
+              <property name="enabled">
+               <bool>false</bool>
+              </property>
+              <property name="maximumSize">
+               <size>
+                <width>30</width>
+                <height>16777215</height>
+               </size>
               </property>
               <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>
+               <string/>
               </property>
-              <property name="alignment">
-               <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+              <property name="icon">
+               <iconset resource="../bitcoin.qrc">
+                <normaloff>:/icons/warning</normaloff>
+                <disabledoff>:/icons/warning</disabledoff>:/icons/warning</iconset>
+              </property>
+              <property name="iconSize">
+               <size>
+                <width>24</width>
+                <height>24</height>
+               </size>
+              </property>
+              <property name="flat">
+               <bool>true</bool>
               </property>
              </widget>
             </item>

src/qt/overviewpage.cpp

@@ -129,10 +129,6 @@ OverviewPage::OverviewPage(QWidget *parent) :
 
     connect(ui->listTransactions, SIGNAL(clicked(QModelIndex)), this, SLOT(handleTransactionClicked(QModelIndex)));
 
-    // init "out of sync" warning labels
-    ui->labelWalletStatus->setText("(" + tr("out of sync") + ")");
-    ui->labelTransactionsStatus->setText("(" + tr("out of sync") + ")");
-
     // start with displaying the "out of sync" warnings
     showOutOfSyncWarning(true);
 }