Changing names

Changing names of images to follow name of menu item.
Adding functions

Adding functions findFriendsButtonClick and InviteFriendsButtonClick
called when clicked on button in right bar.
Setting background

Setting background of right bar. Adding buttons to find and invite
friends.
Adding image

Adding share image (not finished).
Adding function

Adding function to share in CenterViewController.
Adding button

Adding button to share. Calls new function.