New schema: s/Tour.museum/Tour.exhibition/ . Fixing API and tests appropriately.
Absolute url in emails.

Ready for @Colleoni to review.
Settings updated: email on standard output.

Email is now redirected to the stdout.
No admins.
Template for email settingz.
Papacastoro support for multiple images

Now the layout works with multiple images. Also fixed the tiny link
underline which apperaed on the sharing page.
Merge branch 'master' into hotfix/item-exhibition

Conflicts:
	muse/rest/models.py
	muse/rest/views.py
fix kiosk post data sent