Remove unwanted validations from IdentifierScheme

Add extra validations for all models ...

- Includes specs using the Shoulda gem
- Includes a refactoring of update_numbers to a "sortable" abstraction

Add annotate gem for models and Gemfile

added a test that searches for missing translations. Added specific error messages for model validations. Added some devise controlled error messages to pot/po files DMPRoadmap/roadmap#236

Had to remove code that was building devise omniauth connections dynamically. The timing of when the rails engine builds the routes and the models is not conducive to this approach

Added domain to the identifier_Scheme table. Added unit and functional tests for the identifier_scheme functionality

Added a new identifier_schemes table and corresponding user_identifiers join table. Added the initial ORCID identifier scheme to the seeds.db file. Updated the locales file to include corresponding identifier tooltip language, logos, and initial connection message. Updated user profile page to dynamically display identifiers