Fix for multiple quickedit boxes shown on the quickedit screen + merge of "official" 1.2 version

WP.org thread: http://wordpress.org/support/topic/quick-edit-shows-multiple-non-functional-boxes-of-post-type-switch#post-3949192

I'm leaving the major/minor version bumping up to you.
If you want me to do it, no problem, just advise on how you'd like it handled. 

(IMO, it could be a minor bump, and it should not have any backcompat issues, but I haven't tested extensively [apart from making sure it doesn't break our existing 3.4.x and 3.7.1 sites])