Added the ability to delete or clear notifications.
* A "Clear all" button deletes them all (with confirmation)
* A "Remove" button on individual notifications (one confirmation per
page load, so you can remove several without too much tedium)
Fix some things regarding private photo notifications:
* When notifying your existing grants about a new upload, only users who
opt-in for Explicit are notified about Explicit private pictures.
* When revoking private grants, clean up the "has uploaded a new private
photo" notifications for all of your pics from their notification
feeds.
* 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
* Add ability to unlock your private photos for others.
* Link to unlock is on another user's Photos page.
* You can also access your "Manage Private Photos" page in the User Menu
or Dashboard and add a user by username.
* See who you have granted access, and see users who have granted you
access to their private photos.
* Private photos of users who unlocked them for you may appear on the Site
Gallery if the photo allows.
* Add new filters to the Site Gallery: you can choose to filter by Explicit,
limit to a specific Visibility, and order by Newest or Oldest. Non-explicit
users do not get a filter to see explicit content - they must opt-in in
their settings.
* Bugfix: Site Gallery was not correctly filtering Explicit photos away from
users who did not opt-in for explicit!
