clear unread cache on message deletion
when websocket connection fails, try other url (should fix opera <6)
fix date formatters
only propagate staff forum events to staff members
Remove unused translation
de "Deutsch" translation #2412. Author: Anonymous.
fr "français" translation #2416. Author: dope_dog.
it "Italian" translation #2417. Author: AmanteDeisogni.
uk "українська" translation #2421. Author: Anonymous.
es "español, castellano" translation #2422. Author: Anonymous.
hy "Հայերեն" translation #2427. Author: Karen Vardanyan.
ru "русский язык" translation #2428. Author: sak.
el "Ελληνικά" translation #2436. Author: Γιάννης Ανθυμίδης / Yannis Anthymidis.
ca "Català" translation #2454. Author: Vitus.
nl "Nederlands, Vlaams" translation #2455. Author: Amoe. second sentence could be translated another way depending on context
de "Deutsch" translation #2462. Author: Kurt Keller (Ulm, Germany). http://www.yacpdb.org/?id=336798
de "Deutsch" translation #2463. Author: KyivStar. nice work