added model tests
Merge pull request #115 from dcs24/master

Added model tests
Code review change
Implemented deleteQuestion, switched getUserId to a POST request
Merge pull request #122 from bkng/master

Implemented deleteQuestion, switched getUserId to a POST request
Created Main Activity Test
Changed line length style
Added method comment
Added functionality to select by Category in Slide-Menu
Merged Justin's changes
Merged changes from Pull Request 128
Eliminated unneccesary empty check
Fixed slide-menu layout issue
Merge pull request #131 from pleland17/master

Added Beginning MainActivity Tests, Category Selection of Questions