Merge branch 'hotfix/confirmed-json' into develop

* hotfix/confirmed-json:
  Only confirmed events.
  Make sure the timezone is used for rendering the calendar grit.
  Issue 764: attempt to see if the compression causes the error.
  Hotfix: avoid fail when no coordinator marked.
  Mail template changed to resemble variables we actually have.
  Add extra info to cards
  fixes XSS related to bootstrap popover in recent changes
  Move confirmation link in acceptance mail to below the legalese #741
make session cookies secure in production
Merge branch 'develop'