Removed the 'drop table users' from the last migration due to errors in the migration
Adds tags and tag join table to db
Adds routes and corresponding models for tags and link_tags as well as updates links
Refactoring of links controller in attempt to fix bug
Merge branch 'master' of https://github.com/fluxusfrequency/link_box
Merge branch 'tags'

Conflicts:
	config/routes.rb
	db/schema.rb
Fixed merge conflict
Fixes a bug that kept links from being save