Replace ASCII art in pagination controls in Browse Data tab by icons

src/MainWindow.ui

@@ -225,6 +225,10 @@
             <property name="text">
              <string>|&lt;</string>
             </property>
+            <property name="icon">
+             <iconset resource="icons/icons.qrc">
+              <normaloff>:/icons/resultset_first.png</normaloff>:/icons/resultset_first.png</iconset>
+            </property>
            </widget>
           </item>
           <item>
@@ -241,6 +245,10 @@
             <property name="text">
              <string>&lt;</string>
             </property>
+            <property name="icon">
+             <iconset resource="icons/icons.qrc">
+              <normaloff>:/icons/resultset_previous.png</normaloff>:/icons/resultset_previous.png</iconset>
+            </property>
            </widget>
           </item>
           <item>
@@ -264,6 +272,10 @@
             <property name="text">
              <string>&gt;</string>
             </property>
+            <property name="icon">
+             <iconset resource="icons/icons.qrc">
+              <normaloff>:/icons/run</normaloff>:/icons/run</iconset>
+            </property>
            </widget>
           </item>
           <item>
@@ -280,6 +292,10 @@
             <property name="text">
              <string>&gt;|</string>
             </property>
+            <property name="icon">
+             <iconset resource="icons/icons.qrc">
+              <normaloff>:/icons/run_line</normaloff>:/icons/run_line</iconset>
+            </property>
            </widget>
           </item>
           <item>

src/icons/icons.qrc

@@ -46,5 +46,7 @@
         <file alias="keyword">cog.png</file>
         <file alias="clear_filters">clear_filters.png</file>
         <file alias="copy">page_copy.png</file>
+        <file>resultset_previous.png</file>
+        <file>resultset_first.png</file>
     </qresource>
 </RCC>