[TIMOB-10824] Use LayerDrawable in ActivityWindow
[TIMOB-10824] Add support for backgroundRepeat
[TIMOB-10824] Code refactor
[TIMOB-10824] Respect opacity. If none defined use 1f
Merge pull request #3776 from vishalduggal/timob-10824

[TIMOB-10824] Use LayerDrawable in ActivityWindow