Mms: Use the nice colorful LetterTileDefaultImages

Use the new default contact images introduced in Android 4.4.3

PS12:
-added missing mContactKey init

PS13:
-added for more avatar calls

PS14:
-whitespace

PS18;
-quick message popup

PS19:
-fix contacts caching in recipients picker
-fix derp in dividers

Change-Id: I280a5e3abb8dffb9340d360a99da966ea48746f1

Conflicts:
	res/layout/add_recipients_list_item.xml
	src/com/android/mms/data/PhoneNumber.java
	src/com/android/mms/quickmessage/QuickMessagePopup.java
	src/com/android/mms/ui/AddRecipientsListItem.java