Add autosave ability for posts
Add ability to view previews
Add JS alert if leaving page w/ unsaved changes
Add handler on wysihtml5 iframe
Merge branch 'master' into autosave

Conflicts:
	app/controllers/storytime/dashboard/posts_controller.rb
	app/controllers/storytime/posts_controller.rb
Update based on feedback from Ben
Add indicator for autosaves
Update tests
Merge branch 'master' into autosave

Conflicts:
	app/assets/javascripts/storytime/editor.js.coffee
	app/views/storytime/dashboard/posts/edit.html.erb
Strip html tags out from excerpt field
Fix post autosave test
Update gemfile lock for version bump
Merge branch 'autosave'