add API inflection
add users API routes
add users controller API
add API user#index test
remove controllers tests
comment extra generated fixtures
fix users fixture
fix users fixture ... really
API list users and return one single user by id
API return the documents of one single user
add tests and stuff
remove wrong migrations
Generate new migrations for signs, sign_security_methods and sign_security_levels, its intermediate tables and relationships
Clean schema file to regenerate DB schema
Generate schema
Remove models of reqiested_sign_type and sign_type entities
Add models and its relations corresponding to the new entities
seeds for sign security levels and methods, add form in new#documents view
Merge branch 'show_user_documents-API' into dev