embedded window (authorization requests etc.) close button

[Artem Meshbeyn]

In earlier versions the embedded window for authorization requests, 
disconnect notifications etc. had a close button. Now it doesn't. I'm 
getting a couple of authorization requests from spammers/fishers EVERY 
F-NG DAY (pidgin needs more privacy options concerning authorization 
request, but let us talk about this another time, unless somebody has an 
advice) and I don't want to deny them, since any kind of answer would 
only lead to more requests. So, I would really love the close button to 
"reappear" again to ignore those warnings/requests.