updated manifest file to limit support only to tablet for the current version.
reverted to updated submodules version.
updated usb submodule to the correct commit.
Merge pull request #597 from ne0fhyk/feature_restrict_to_tablet

Limit application support to tablet
Merge pull request #600 from ne0fhyk/fix_issue_577

Fix issue #577
updated the default return value for onOptionsItemSelected to solve bug #577