Renamed ServiceAccessToken model to AccessToken
Removed commented-out Client fields
Added comments
Simplified verification code
Added function to remove repeated code
Put routes in order
Updated config files

- Removed unused registration_client_uri option
- Simplified structure to remove 'uris'
- Added comments
Merge branch 'develop' into refactoring
Merge branch 'develop' into refactoring
Merged refactoring branch
Merged