created onclicklisteners for nav buttons in nickname
Merge pull request #31 from bahaa360/master

Login Password Confirm and Check
Completed nickname activity
Merge pull request #32 from 3olcin/master

changed Nickname activity
fixed inventory activity and made some changes

fetches inventory from server for user but still looks ugly. Will have
to move to fragments sooner rather than later.
refactored some activities into fragments
RIP pet, inventory,mng account, nickname activities
use resource strings for tab titles