Followup 57fb7c: fix capitalization and add deselect shortcut

Author: nyalldawson

src/ui/qgisapp.ui

@@ -996,14 +996,20 @@
    <property name="text">
     <string>Deselect Features from All Layers</string>
    </property>
+   <property name="shortcut">
+    <string>Ctrl+Shift+A</string>
+   </property>
   </action>
   <action name="mActionSelectAll">
    <property name="icon">
     <iconset resource="../../images/images.qrc">
      <normaloff>:/images/themes/default/mActionSelectAll.png</normaloff>:/images/themes/default/mActionSelectAll.png</iconset>
    </property>
    <property name="text">
-    <string>Select all Features</string>
+    <string>Select All Features</string>
+   </property>
+   <property name="toolTip">
+    <string>Select All Features</string>
    </property>
    <property name="shortcut">
     <string>Ctrl+A</string>
@@ -1015,7 +1021,10 @@
      <normaloff>:/images/themes/default/mActionInvertSelection.png</normaloff>:/images/themes/default/mActionInvertSelection.png</iconset>
    </property>
    <property name="text">
-    <string>Invert Feature selection</string>
+    <string>Invert Feature Selection</string>
+   </property>
+   <property name="toolTip">
+    <string>Invert Feature Selection</string>
    </property>
   </action>
   <action name="mActionIdentify">
@@ -1257,9 +1266,6 @@
    <property name="text">
     <string>New SpatiaLite Layer...</string>
    </property>
-   <property name="shortcut">
-    <string>Ctrl+Shift+A</string>
-   </property>
   </action>
   <action name="mActionShowRasterCalculator">
    <property name="icon">