Closes#5459
- added a PNG background with 2 emails addresses as a "placeholder"
- added a `required` attribute for textarea in 3rd step of the setup
- taking an advantage of `:valid` pseudo-class to hide the background
picture with email addresses
Merging setup screen into the new app wrapper had some knock-on effects due to new flexbox parent elements. As a result things were vertically collapsing in unexpected ways on narrow viewports. This is cleaned up here, with some other minor visual bugfixes.
closes#5338
- moves skip link to below the submit button
- makes the submit button better represent form status
- posts notifications based on success/failure of notifications
- goes to the invite page after user creation
- actually sends invites!
functional tests passing for onboarding invitations
cleanup for linitng
remove unreachable return
access the notifications service better
use link-to instead of an anchor with an action
failed user creations get caught, and bubble as errors
a slew of other cleanup stuff via jason
