Issue 1858 - annotate javascript interface methods.

Native methods in a javascript bridge aren't exposed to javascript without being annotaded in SDK 17+. This meant that we couldn't trigger sound playback on Android 4.2.
don't terminate review abruptly when sibs removed from queue (dae/anki d814991)
fix new cards not being shown in new order (dae/anki 1f3a571)
Merge pull request #117 from hssm/burying

Burying: UI changes, catch up to new commits, and some fixes
Merge pull request #119 from hssm/replay-audio

Issue 1858 - annotate javascript interface methods.
Merge pull request #120 from hssm/bury-2.0.16

More burying  updates to match Anki 2.0.16
bump sync ver to 7 and change meta return value (dae/anki f29a04a)
include a session key when syncing (dae/anki 8d7edcb)
include platform in cv (dae/anki 3ed2861)