Fix cutoff text for exams in schedules

Enabled text wrapping on the course code. This may require a bit more
playing with to make it look nicer, but it appears to do the trick.
Tweak line wrapping to make it wrap properly

Moved the wrapping css up a level so it wraps on the whole course code
and section instead of on two parts.
Merge pull request #167 from Kapin/exam_wrapping

Fix cutoff text for exams in schedules