Add exam timetable to the exported file

Sorry I'm being so picky about all these. But let's try to adopt a neat consistent style as far as possible. For general guidelines, refer to:
http://mozweb.readthedocs.org/en/latest/css-style.html and http://mozweb.readthedocs.org/en/latest/js-style.html. The rules in jshint may differ by a bit but isn't too different from the sites listed here.

Anyways, I just tested it and it looks awesome. Thanks @DIdiHL ! I'll merge it as soon as these minor styling issues are fixed.