* Add ability to (un)subscribe from comment threads on Forums and Photos.
* Creating a forum post, replying to a post or adding a comment to a photo
automatically subscribes you to be notified when somebody else adds a
comment to the thing later.
* At the top of each comment thread is a link to disable or re-enable your
subscription. You can join a subscription without even needing to comment.
If you click to disable notifications, they stay disabled even if you
add another comment later.
* Add permalink URL for photos to view their comment threads.
* Commenters can Edit or Delete their own comments.
* Photo owners can Delete any comment on it.
* Update Privacy Policy
Finish implementing the basic forum features:
* Pinned threads (admin or board owner only)
* Edit Thread settings when you edit the top-most comment.
* NoReply threads remove all the reply buttons.
* Explicit forums and threads are filtered out unless opted-in (admins
always see them).
* Count the unique members who participated in each forum.
* Get the most recently updated thread to show on forum list page.
* Contact/Report page: handle receiving a comment ID to report on.
Implement Likes & Notifications
* Like buttons added to Photos and Profile Pages. Implemented via simple
vanilla JS (likes.js) to make ajax requests to back-end to like/unlike.
* Notifications: for your photo or profile being liked. If you unlike,
the existing notifications about the like are revoked.
* The notifications appear as an alert number in the nav bar and are read
on the User Dashboard. Click to mark a notification as "read" or click
the "mark all as read" button.
Update DeleteUser to scrub likes, notifications, threads, and comments.
