Merge pull request #4 from borain89vn/master

fix button back,view history,change password,lanscape
! Merge code with justin fixed bug
Merge pull request #5 from borain89vn/master

check password,webview
!Merge code with Justin, fix some force close bug
Merge pull request #6 from borain89vn/master

Finish fix bug Sicbo game
! Merge code with Justin
Merge remote-tracking branch 'upstream/master'
implement policy checkbox ,and webview