Added action bar customization.  And Cards for list view.
Merge branch 'prakash-dev'

Conflicts:
	OneBrick/app/src/main/java/org/onebrick/android/activities/EventsActivity.java
	OneBrick/app/src/main/res/drawable/card_background.xml
	OneBrick/app/src/main/res/drawable/card_background_selector.xml
	OneBrick/app/src/main/res/drawable/card_state_pressed.xml
	OneBrick/app/src/main/res/layout/activity_events.xml
	OneBrick/app/src/main/res/layout/item_event_list.xml
	OneBrick/app/src/main/res/values/styles.xml
Merge prakash-dev.
Resolve conflict.
Update look n feel styles.