Using a recent activity object for notifications
Initial testing with task schedule and resque, message jobs
Mount resque admin with schedule addon
More emailing messages converted to recent activity + workers
Merge branch 'branch-v2' into branch-v2-refactor-emails
Adds invitation by email to events

`initializers/mweb_events.rb` now loads controlers and models from `lib/mweb_events/`

`lib/mconf/invitation.rb` is now a generic class for invitations. WebconfInvitation and EventInvitation
implement more specific stuff

refs #1216
Invite button opening modal + some translations

refs #1216
Refactor common behavior of invitations a little more

refs #1216
Update the URL to the new android mobile client
First changes for the new logic when joining via mobile

There will be a single button to join a conference. If the user is in a mobile
device, the mobile client will be automatically triggered. The old modal window
to join via mobile was removed.

Made a new "mobile" layout, currently only used in the page shown to join a
conference from a mobile client, but that can be used for more in the future.
Correct authorization for join_request actions
Views and controllers to restore join requests behavior
Refactor and add some join_requests tests
Move abilities tests out of space controllers and only ensure authorizarion is called refs #1172

Conflicts:
	spec/controllers/spaces_controller_spec.rb
Prevent i18n deprecation warning
Removed delayed_jobs

We resolve to change from delayed_jobs to Resque, so all delayed_job were removed and replaced for Resque. Some emails were changed to the new format used with Resque. The tests are missing yet.

refs #811
Auhtorization tests for user controller
Some tests and pending tests for join requests
More tests for join_requests controller and some fixes
Tests for join requests invite and create?invite=true and correct some failures