1st pass at using ScrimInsetsFrameLayout to show drawer behind translucent ActionBar
Changed status bar color from 75% alpha to 85% alpha
Rewrote handling of drawer behind status bar, created separate style for drawer activities
Correct v21 styles so status bar color doesn't change when moving from drawer to non-drawer activity
Merge pull request #2046 from wordpress-mobile/feature/drawer-scrim-insets

feature/drawer-scrim-insets