Refactor ProjectsPresenter using Erector::Widget
Refactor TagsPresenter using Erector::Widget
Refactor TagPresenter using Erector::Widget
Refactor TaggingsPresenter using Erector::Widget
Remove unused files
Cleanup presenters
Rename TaggingsPresenter -> TagFieldWithTaggingsPresenter
Extract ViewingATagTaggings html-building code to TagTaggingsPresenter