for timetables, have new form rendering with new js to allow adding more sessions
added some css goodness to example how the links could be better in the timetable-session-formset
started to add the newsession functionality
added the date loop for adding a session to a timetable
some more changes to the dynamic formset for subject adding to timetables, have removed css for buttons as I couldn't make them pretty in a reasonable time. Will have to return to this.