Started implementation of the USers and the Specific User profile page.
Possibilities to list all the users and to view their profile page.
Added a test with a GridView isntead of a regular listview for the
Users. commented out the ListView part.
Added more support for the users and specific users, just listing all
the users and possibillity to go to a specific user's profile. The
profile is not correctly formatted and will need more work. Basic bug
fixes in the main activity and the registration.
Merge remote-tracking branch 'origin/Listing_Users'

Conflicts:
	GitWarriorSolution/AndroidManifest.xml
	GitWarriorSolution/res/layout/activity_main.xml
	GitWarriorSolution/src/com/example/gitwarriorsolution/MainActivity.java