Pre-updated front end code

Will change a bunch when someone finally merges codys code.
Posting a solution, dialog boxes

The code for posting a solution is up and running. I created a couple
schemas for dialogue boxes, we should all use these for consistency.
Cleaned up some random other files. NOTE: we still need to contact
question services on startup and on exit.. i did not add code for this
yet, but will on next commit (posting questions)
fixed some merge conflicts

BROKEN
Merge conflicts fixed

Functional
added code for posting a question
merge conflicts resolved
Code for posting a question functions, but looks bad
r
Still ugly
made it look prettier, fixed dialog bugs
Deleted repeat lines in dimens.xml
Created Main Activity Test
Changed line length style
Added method comment
added model tests
Code review change
Implemented deleteQuestion, switched getUserId to a POST request
fix build target
Added functionality to select by Category in Slide-Menu
Fixed persistent exception when no Difficulty is selected