Feature menu tuning

this began as actionbar menu tuning, and expanded to some more general UI improvements from initial user feedback

- removed colorful background images (will allow user to define/set)
- added back in list / no avatar mode for contacts with grid/list switch pref
- removed menu below chat, and moved all functions to actionbar (in progress, nearly done)

a little more to do, then want to test, and push to Beta group