before merging, roster, assignment and enrollment model added
Adding semaster
select2 not completely implemented, stop for add new in drop down
Select2 not fully implemented

Stop for add new function in drop-down.
Show detail not fully implemented.
before merge with dongye
Merge remote-tracking branch 'origin/latte-merge'

Conflicts:
	app/views/layouts/application.html.haml
	app/views/programs/schools.html.haml