Update setup.py
typo
Use the latest django-haystack version
Updated required packages
Added missing migrations
Fixed dependency sources for requirements
Don't set a default value for phone numbers, can now use the vanilla package for django-phonenumber-field
Fixed installing django-notifications
Removed unused imports
Linked the external page to the landing page in the wiki and restricted that page to be editable by managers
Managers can now delete wiki pages, too
Merge branch 'master' into kingman

Conflicts:
	base/templates/external.html