Allow regular (non-admin) users access to the Manage Forums page so they can
create and manage their own forums.
Things that were already working:
* The admin forum page was already anticipating regular LoginRequired credential
* Users only see their owned forums, while admins can see and manage ALL forums
Improvements made to the Forum Admin page:
* Change the title color from admin-red to user-blue.
* Add ability to search (filter) and sort the forums.
Other changes:
* Turn the Forum tab bar into a reusable component.
* Users who set their Profile Picture to "friends only" or "private" can have
their avatar be private all over the website to users who are not their
friends or not granted access.
* Users who are not your friends see a yellow placeholder avatar, and users
not granted access to a private Profile Pic sees a purple avatar.
* Admin users see these same placeholder avatars most places too (on search,
forums, comments, etc.) if the user did not friend or grant the admin. But
admins ALWAYS see it on their Profile Page directly, for ability to moderate.
* Fix marking Notifications as read: clicking the link in an unread notification
now will wait on the ajax request to finish before allowing the redirect.
* Update the FAQ
