General stuff.

-Removed drawable image references from the new layouts. The images
for the layouts need to be included for it to build properly.
-Added short Javadoc comments to all android activities to make
to clearly and documented.
-Having issues building due to missing Gson import? Is anyone else
having this issue?
Merge branch 'master' of https://github.com/cserafin/CMPUT301W13T14