Intergration of timeline editing and main app
Adding fireworks by buttons
Minor mods to the JS
Merge branch 'jack' into develop

Conflicts:
	app/assets/javascripts/tracks.js.coffee
	app/controllers/shows_controller.rb
	app/views/shows/edit.html.erb
	db/schema.rb
	vendor/assets/stylesheets/timeline.css
Merged with some bug fixes. Semi-working
progress bars do cool stuff like change color and disappear