viewpager before commit
add default initial tab essential.

add initRoomsTab(), initFriendsTab(), initSettingsTab()

apply actionbar setting, >> But there is some bug in ViewPagerAdapter. Pager index doesn't work make sense. plz check it
add mockup list items
bug fix -- visible activity
add global variable pagerIndex and add Actionbar View in onResume
viewpager almost finish
merge with viewpager