Implement adding ActionItems to Projects
Refactor change category buttons for a project's action items
Refactor change category buttons for Action Items lists
Display action item counts next to projects (if > 0)
Display count of completed/total action items per project
Refactor projects per status table
Add 'Back to Projects' button on Show Project view
Tweak display of action items for project
Link to Project for proj-related action items
Generate Link model & controller