Consolidate the two group metadata classes

* group.GroupMetadata is renamed to GroupMetaData

* The defaultGroup and favorites fields from
  common.GroupMetaData are added to group.GroupMetaData.

Test: manual tests
  - Add and edit a group
  - Load quick contacts w/ and w/o groups
  - Add invisible and directory contacts to default group

Change-Id: I7f53ae6e4409c414918ffc5615fb5e3bd25d116d
diff --git a/src/com/android/contacts/GroupMetaDataLoader.java b/src/com/android/contacts/GroupMetaDataLoader.java
index 26cdb44..18a975d 100644
--- a/src/com/android/contacts/GroupMetaDataLoader.java
+++ b/src/com/android/contacts/GroupMetaDataLoader.java
@@ -28,7 +28,7 @@
  */
 public final class GroupMetaDataLoader extends CursorLoader {
 
-    private final static String[] COLUMNS = new String[] {
+    public final static String[] COLUMNS = new String[] {
         Groups.ACCOUNT_NAME,
         Groups.ACCOUNT_TYPE,
         Groups.DATA_SET,