Add and install acts_as_taggable_on
Add tags to articles
Add tags to videos
Add tags to documents
Create admin tags controller
Add admin tags index view
Add tags link on admin menu
Add some jquery ui libs
Add tag_list field to articles admin
Add JS lib to tags input with autocomplete
Add tag list on videos admin
Add tag list to documents admin
Fix admin articles controller
Add tags to event model
Add tags to events admin form