Added documentation. Removed unused class. Removed unused import.

Also removed the license from each file, since the contents might change. There is now only one "master" license file in the project root folder.

Change-Id: I1b8cdcc826ea380dea74a2e8ef224d1feceb5970
Added functionality for time per session.
Also formatted the output of the javascript.

Change-Id: I130412cd93746d7b0dc59edaa0d91f9601d670b9
Merge "Added documentation. Removed unused class. Removed unused import." into develop