Add refresh button only for Campaigns

Temp. hack to let people see new images when they come through

Change-Id: I986bc274ccebd53fef75dbaeffcdff891a4f77bf

commons/res/menu/fragment_contributions_list.xml

@@ -26,5 +26,9 @@
           android:showAsAction="never"
           android:icon="@android:drawable/ic_menu_send"
             />
+    <item android:id="@+id/menu_refresh"
+          android:title="@string/menu_refresh"
+          android:showAsAction="never"
+          />
 
 </menu>

commons/res/values-qq/strings.xml

@@ -3,6 +3,7 @@
   <string name="app_name">The name of the application.
 {{Identical|Wikimedia Commons}}</string>
   <string name="app_name_beta">Name of the beta version of the application</string>
+  <string name="menu_refresh">Label for menu item that refreshes current list of images.</string>
   <string name="menu_settings">Label for menu item to show settings.
 {{Identical|Settings}}</string>
   <string name="username">{{Identical|Username}}</string>

commons/res/values/strings.xml

@@ -141,4 +141,5 @@
     <string name="detail_description_empty">No description</string>
     <string name="detail_license_empty">Unknown license</string>
     <string name="provider_campaigns">Campaigns</string>
+    <string name="menu_refresh">Refresh</string>
 </resources>