Create base course model.
Add beginning of specs for unit.
Generate Unit model and add to Course with a has_many association.
Move tests for models to their own folder.
Generate learning target model.
Generate learning target model.
Merge branch 'courses' of https://github.com/graspapp/grasp into courses
Add has_many :through association between students and courses.
Single full name form_field.
Add has_many :through relationship between course and student proper.
Student/Teacher Full name form field with tests
Learning Targets and Tasks added.
Merge branch 'bug-fixes' into courses
Fixed specs
Merge master into courses.
Add shoulda to Gemfile.
Add name to learning targets in database.
Add number to learning targets in database.
Form and db fix
Revert "Form and db fix"

This reverts commit 039799091b9fa7df0552ebe7f48a474cf09707d7.