Added both original and revised file name to the source diff report

This is needed to get both the complete original file and the complete
revised file for the new views we are adding
New tree view in the overview page
Added 3 new views

Addeed the basic coverage inforation views, and the simple source diff
view
Finished up the last combined view
Merge pull request #29 from soosterwaal/step_7

Step 7, added new views and a new overview to the html site