Release of version 2

This release has a lot of changes:
 - Added multiauth support with ollieread/multiauth package.
 - Added lang files, english and spanish.
 - Added support for multiple administrator accounts.
 - Added support for activate/deactivate administrator accounts.
 - Added "Super Administrator" account:
    - Added "super-admin-auth" filter.
    - Modification on routes for use the new filter.