Permission fixes to view venues.
Added useful links to view venue.

Fixed Conflicts:

	models/tables.py
Cleaned up the task index.
Improved the view of the feedback.
Ensured that admins can view venues.

Resolved Conflicts:

	models/db.py
Links now render as links.
Improved some form validation.
TP: Better management of venue permissions.
Merge remote-tracking branch 'github/luca' into mshavlov