Added devise gem, sign in/up links, rescaffolded artworks, supplies, and media
Removed photos from Artists and Artworks
Merge branch 'master' of github.com:kwoodard22/artist_yard_sale

Conflicts:
	app/controllers/artworks_controller.rb
	app/controllers/media_controller.rb
	app/controllers/supplies_controller.rb
	app/models/artist.rb
	app/models/artwork.rb
	app/models/supply.rb
	config/routes.rb
	db/schema.rb