First pass at instructor groups
Test the courses property on the instructor-group model
Fix the buffered title on instructorgroup/group controller
Fix new instructor group display
When a new group is added use an alias property so the title doesn't sort until it is saved.
Also added a flat remove button because there is no loss if a new group is removed since it contains no data.
Add missing test for new instructor group sorting
Merge pull request #4 from jrjohnson/instructorgroups

Basic Instructor Groups
Replace the current user route mixin with a service class
Allows us to use the currentUser in more places and also specify session based non persistent functionality outside of the user model.
Working school picker
Add test for programs school change..
Translate breadcrumbs on progarms controller
Add school picker to instructor groups