Make users#show page listst posted initiatives as an unordered list with no bullets
Add :edit and :update actions to signed_in_user before_filter
Organize initiative#show page links into <table>; toggle presence of Edit and Delete links based on whether the current_user == @initiative.user, or current_user.admin?
Fix issue regarding passing f.object into the shared/error_messages partial
Add before_filter to ensure only @initiative.user and admins can :edit, :update or :destroy an initiative