Incoporate comment fixes from profile-comments branch into current state of app.
Add helper methods for user_content and visitor content as well as a validator to check if @user == current_user
Move button from middle of modal to bottom. Add goal date picker to modal to fix error on show page that tries to use goal date to calculate progress.
Prevent current user's card from showing up on all_users list
Merge branch 'merge_experiment' of https://github.com/krytlewski/fatcamp into merge_experiment

Conflicts:
	weightable_practice_scaffolding/app/controllers/users_controller.rb
	weightable_practice_scaffolding/app/views/users/index.html.erb