initial BuildBrigActivity
move the common navigation drawer, GA and ads code from all activities to a base activity
use FLAG_ACTIVITY_REORDER_TO_FRONT flag instead of singleTask launch mode. Open drawer when app first started. May have fixed the drawer-not-close problem (no idea why it went away though...)
change build brig to 2-row layout
add the formation chooser
move the save picture button to bottom and add a label for the formation
add toast notification after taking image, make the formation looks nicer on different screen size
Merge branch 'build_brig'