Iteration on display groups UI, was neglected for awhile.

Switched to using Accounts metadata provided through
Sources cache.  Also added long-press and menu item to serve
as our "edit sync groups" in the same UI.

Need to iterating to show all accounts regardless of group
existance, and persist DEFAULT_SHOULD_SYNC values.
diff --git a/res/values/ids.xml b/res/values/ids.xml
index dbf9b65..48981e0 100644
--- a/res/values/ids.xml
+++ b/res/values/ids.xml
@@ -27,4 +27,6 @@
     <item type="id" name="dialog_label" />
     <item type="id" name="dialog_label_custom" />
 
+    <item type="id" name="dialog_sync_add" />
+
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index d845e09..2278761 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -864,6 +864,16 @@
     <string name="dialog_primary_name">Primary name</string>
     <string name="dialog_new_contact_account">Create contact under account</string>
 
+    <string name="menu_sync_remove">Remove sync group</string>
+    <string name="menu_sync_add">Add sync group</string>
+
+    <!-- List title for a special contacts group that covers all contacts that
+         aren't members of any other group.  -->
+    <string name="display_ungrouped">(Ungrouped contacts)</string>
+
+    <!-- Warning message given to users just before they remove a currently syncing
+         group that would also cause all ungrouped contacts to stop syncing. -->
+    <string name="display_warn_remove_ungrouped">Removing '%s' from sync will also remove any ungrouped contacts from sync.</string>
 
 
 <string name="call_home">Call home</string>