Merge branch 'master' of github.com:loomio/loomio into feature/edit-proposal-notifies-users-who-have-voted

* 'master' of github.com:loomio/loomio:
  Split sign in and sign up when accepting invitations
  Update schema
  scope pie js to search page
  add tabindex for search
  Change admin to coordinator. Fixes #818
  add inline-block mixin to add-on
  Get rid of extra border around comment avatars
  replace default 'false' with ''
  add proposals to search
  remove phase and refactor motion close_at
  adds search for discussions

Conflicts:
	app/assets/stylesheets/motions.css.scss
	app/models/motion.rb
	app/views/motions/_close_at_inputs.html.haml
	app/views/motions/_form.html.haml
	app/views/motions/_motion.html.haml
	db/schema.rb