Add exam timetable to the extracted timetable html.
merge with upstream
Merge remote-tracking branch 'upstream/master'
Add lecture/tutorial period filters
Add 'No Lectures'/'No Tutorials' filters
Fixed some jshint errors
Improved discus-count code quality. Still bad though
Merge pull request #79 from DIdiHL/master

Add exam timetable to the exported file. Fixes #60.
Fixed code styling issues with timetable export