[fix bug 909875] Fix 500 error in formset validation.
Merge pull request #479 from akatsoulas/909875

[fix bug 909875] Fix 500 error in formset validation.
[fix bug 909304] Display event title first in og:title tag on event details pages.
[fix bug 882676] Add missing indication in required form fields.
[fix bug 909295] Add og:description tag to event details pages
Merge pull request #481 from hardfire/909295

[fix bug 909295] Add og:description tag to event details pages