Rename GroupMemberPickerFragment rawContactsIds

... and all associated ARG and KEY constants to
contactsIds, since that's what it really is. Also

* Share the selection clause between GroupMetaDataLoader
  and GroupListLoader -- we were inconsistent in filtering
  out auto add and favorites groups.

* Remove unsued groups methods:
  - GroupMemberPicker.Listener#onGroupMembersSelected
  - GroupUtil#bindPhoto

* Remove some obsolete comments, fix some others

Test: Manually create and edit editable and read-only groups

Change-Id: I9607225d1a61f8673b7d1461149ae30e253c781d
diff --git a/src/com/android/contacts/common/list/ContactListFilter.java b/src/com/android/contacts/common/list/ContactListFilter.java
index 2bae617..4c8ca89 100644
--- a/src/com/android/contacts/common/list/ContactListFilter.java
+++ b/src/com/android/contacts/common/list/ContactListFilter.java
@@ -315,7 +315,8 @@
     /**
      * Adds the account query parameters to the given {@code uriBuilder}.
      *
-     * @throws IllegalStateException if the filter type is not {@link #FILTER_TYPE_ACCOUNT}.
+     * @throws IllegalStateException if the filter type is not {@link #FILTER_TYPE_ACCOUNT} or
+     * {@link #FILTER_TYPE_GROUP_MEMBERS}.
      */
     public Uri.Builder addAccountQueryParameterToUrl(Uri.Builder uriBuilder) {
         if (filterType != FILTER_TYPE_ACCOUNT