Moved .box css to its own file in /comps since we use it in several places.

Created User. Added user table to DB. Added user backend model with relationships. Added user controller and views. Added user routes resource. Added user backbone entity.

Updated application to set User rather than setting everything through focuses. Updated rest of the app to expect App.User rather than App.User.focuses

Updated focus table to focus_areas because of trouble with rails and rabl pluralizing. Focus pluralizes to focus for rails, but when I use child(:focus) in rabl, it expects focu as singular. I tried several things but ultimately switched to focus_area. This required updates in DB, backend models, front-end model url, projects and procedures were updated to use focus_area_id rather than focus_id.