* Add a ChangeLog table to collect historic updates to various database tables.
* Created, Updated (with field diffs) and Deleted actions are logged, as well
as certification photo approves/denies.
* Specific items added to the change log:
* When a user photo is marked Explicit by an admin
* When users block/unblock each other
* When photo comments are posted, edited, and deleted
* When forums are created, edited, and deleted
* When forum comments are created, edited and deleted
* When a new forum thread is created
* When a user uploads or removes their own certification photo
* When an admin approves or rejects a certification photo
* When a user uploads, modifies or deletes their gallery photos
* When a friend request is sent
* When a friend request is accepted, ignored, or rejected
* When a friendship is removed
* Add photo upload quotas.
* Non-certified users can upload few photos; certified users more
* Fix foreign key issues around deleting user profile photos for psql
* Add the user photo gallery for profile pages. Paginated, grid or full (blog
style) view options. In grid view clicking a photo opens a large modal to
see it; full view already shows large photos.
* Edit page: can also re-crop and set an existing pic to be your profile pic.
* Delete page: remove photos from the DB and hard drive.
* Photos are cleaned up from disk when not needed, e.g. during a re-crop the
old cropped photo is removed before the new one replaces it.
* Fixed bug with cropping pictures.
