adding api, user interests
adding unique constraints to user_to_categories on both user_id and category_id
adding v1 interest controller to api
renaming things
testing current requests.
interests controller works with category_name
setting up framework for front-end for @www
changing sessions store for work across subdomains -- clear your cookies
merge fixes
Merge branch 'develop' of https://github.com/Make-Magazine/makerapp into develop

* 'develop' of https://github.com/Make-Magazine/makerapp:
  Push It baby
  Control all the things
merge fix