events should not be mandatory for schedule instances
trainee and term unique_together: one schedule per trainee per term
added hard date calculation methods
lots of fields needed to be null+blank=True
changed Events to go by hard date (instead of term week/day)
rudimentary todays schedule on homepage working
cleaned up model
Merge branch 'attendance-views' of github.com:attendanceproject/djattendance into attendance-views
add django-bootstrap3
minor updates to model
temp add links for demo
added unicode methods. oops.
cleaned up some schedule urls because it was causing conflicts with event urls
first stab at util widgets, copied from terms. not working yet though
rudimentary CRUD for schedule models
adding everything in for demo