* Had to do Model level access in the view. Once there is a hook in the
controller, it can be moved to there.
* Added a table listing each rate using the memberships table as a base
#1915
* Wrapped UsersHelper#user_settings_tabs with an alias_method_chain
* Added the new Rate element to the return of user_settings_tabs
* Added RSpecs to confirm the change works without breaking
* Added a partial view for users/rates which will be used by Redmine
when it renders the user edit panel
#1913
Eric Davis