Delay updating of Contacts.IN_VISIBLE_GROUP until finished.

To help prevent ANRs, this change take advantage of new
query parameters that delay updating until explicitly
requested.  When the user finishes changing groups and
presses back, we show a progress dialog while we force a
single visible update pass in the background.

Fixes http://b/2075275
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 624885c..2c66748 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -345,7 +345,10 @@
     <string name="starredInAndroid">Starred in Android</string>
 
     <!-- Displayed in a spinner dialog after the user creates a contact and it's being saved to the database -->
-    <string name="savingContact">Saving contact...</string>
+    <string name="savingContact">Saving contact\u2026</string>
+
+    <!-- Displayed in a spinner dialog as user changes to display groups are saved -->
+    <string name="savingDisplayGroups">Saving display groups\u2026</string>
 
     <!-- Toast displayed when a contact is created -->
     <string name="contactCreatedToast">Contact created.</string>