Cleanup templatetags

Remove unnecessary call heirarchy, group similar tags together.
Cleanup udfc search markup and tighten up perms
Make udfc perm checks support non-logged in users

fixes #1323 on github
PR fixup: use default role instead of hard coding
PR fixup: Support instances that don't have alerts/stewardship
Merge pull request #1341 from steventlamb/bug/1323_udfc_search_auth

Bug/1323 udfc search auth