create link_tagging model
link tag associations
link model has link_tag associations and methods
link tag cloud method in appl helper
link tag field in link form
tag links are included in links index view
link tags routes
link index action accepts link_tag param
tag_list method is link_tag_list
link show page lists tags
fix link_taggings and link association
add index to link_taggings
fixed typo in link index view
debugging link index view
fixed link_tag names and links in the links index view
fixed link show view and changed root to links#index