Changes to project members and user projects forms UI.
Fixes controllers and views.
Initial commit for multiple roles.
Multiple roles branch added.
Adds hostname to Redmine links in atom feeds (#3275).
Fixes user edit urls (#3281).
Fixes self and alternate atom links (#3161).
Ticket grouping (#2679).
Adds .erb mime type.
Adds more css classes to the roadmap issues (#3214).
