Replace Google Play Services with Gingerbread variant.

We're going to be supporting Gingerbread devices as well, thus the
Google Play Services component we referenced needed to be replaced with
one that also uses (and includes) the Android Support Libraries v4 and
v7.
Use WakefulBroadcastReceiver from support lib.

Removed our version of WakefulBroadcastReceiver and started using one
from the Android support library.
Migrate activities and fragments to support library.
Change framework versions.

Make the minimum required API level to 10 (Gingerbread) and maximum to
the latest framework version installed.
Add shim to enable MultipleModal behaviour on API level 10.
Workaround activatedBackground missing in API<11.
Add 2nd shim implementation which uses framework ModalMultiChoice.
Merge branch 'roosmaa-support-lib'

Started using support library activities and fragments throughout.