Some changes added to compile and run with Java 6 and Java 7.

  - correction of errors with Javac 6:
    - fields accessibility of generic class.

Change-Id: Ice8a707450cd07f1c562c826af644153a30e8cfe
Gallery2: remove settings option from menu

AOSP has no configurable settings. this has been causing confusion with users used
to seeing account settings in the GoogleGallery

Change-Id: I29061db61065055d1c9fb9bf72321710a003d42f