Merge pull request #96 from Andrewmp1/master

Cleaned up some code around users & dashboard
Remove a ton of generated test files.  Write a quick test to verify that paper_trail was installed and terms can be versioned
Add some validations around the models.
Merge pull request #97 from Ember-SC/versions

Added paper_trail to allow versions of terms.
Update ember app organization and user relationships to use ember-data many to many relationships
Fix organizations and users w/ memberships.  Keep membership exposed to ember as ember-data can't really create many to many relationships.  Added some more tests
More changes to the ember app around memberships