add exit in menu for ad creation activities
add new class which holds common functionality for all ad funnel activities
remove option menu over-riding
remove unused menu xml files
Merge pull request #133 from rpandey1234/improveMain

import library to enable all code
Rahul's changes
Basic top bar working
Centering of cropview
Delete obsolete editor activity
top bar in every activity albeit with errors
Buttons now work
Fixed various layout bugs
Encapsulated variables and a few functions
Make buttons transparent
A few nit changes
Added button separator
Merge pull request #136 from benrudolph/topbar

(#135) - Introduces topbar
Bottombar has been encapsulated
Bottom bar working
Heavily decomposed layouts