Add EteSync to list of pro features

app/src/googleplay/res/values/arrays.xml

@@ -3,6 +3,7 @@
   <string-array name="pro_description">
     <item>@string/themes</item>
     <item>@string/pro_caldav_sync</item>
+    <item>@string/pro_etesync</item>
     <item>@string/pro_multiple_google_task_accounts</item>
     <item>@string/pro_google_places_search</item>
     <item>@string/pro_tasker_plugins</item>

app/src/main/res/values/strings.xml

@@ -517,6 +517,7 @@ File %1$s contained %2$s.\n\n
   <string name="pro_subscribe_now">Subscribe now to support development and unlock additional features</string>
   <string name="themes">Additional themes and icons</string>
   <string name="pro_caldav_sync">CalDAV synchronization</string>
+  <string name="pro_etesync">EteSync synchronization</string>
   <string name="pro_multiple_google_task_accounts">Multiple Google Task accounts</string>
   <string name="pro_google_places_search">Google Places search</string>
   <string name="pro_tasker_plugins">Tasker plugins</string>