Show mass moderation options when searching.

[TrixieTang]

Currently no moderation options at are are available when searching threads and posts, this can be pretty annoying considering that if you were to search for a spammer's threads to delete them you'd have to go into each and delete them separately, same goes for spammer's posts.

I think it would be useful to show mass moderation options on search pages since it would make it a lot easier to get rid of multiple spam posts and threads.