Complete appearance and basic wiring for the price filter.
Merge branch 'master' into filters-devel
Merge branch 'master' into filters-devel

Conflicts:
	app/views/bounties/index.html.erb
Implement the Rails 3 version of Turbolinks.
Wire up the client-side price filter to the back end Bounty#index method.
Only reload the bounty list and not the whole page when applying bounty filters.
Rename a script file to meet asset pipeline naming conventions.