Don't bother blanking the webview on disappear.

It looks like the issue it once addressed no longer exists. Happy to revert upon complaint.
Upload the edited (e.g. cropped) image, not the original image, when posting.

The assets library can't give us a full resolution image with all adjustments applied. So, during upload, we'll check for adjustment metadata and fall back on the slow, UIImage-based upload when necessary.
Sort Themes.plist.
Individually theme each item in the forum-specific themes settings screen.