Remove unused field on user group model
add creating owner and project ids to subject
add documentation for class diagram
Merge pull request #36 from camallen/data_model_doc

add documentation for class diagram
fix RACK_ENV spelling
Merge branch 'fix_travis_env'
Merge pull request #35 from camallen/subject_user_project_ids

add creating owner and project ids to subject
Merge branch 'bug_fix-remove-classifcation_count_from_user_group'

Conflicts:
	db/schema.rb