Fixed BlackBerry OS spelling

Black Berry OS
"Black Berry OS" is a wrong spelling of OS. The right spelling is "BlackBerry OS". Please see for more details: http://en.wikipedia.org/wiki/BlackBerry

RIM Tablet OS
Since BlackBerry bought RIM company OS was renamed to "BlackBerry Tables OS" (please see http://en.wikipedia.org/wiki/BlackBerry_Tablet_OS for more details). But the current logic identifies not only tablet devices but also a lot of phones. So we suggest to rename it to "BlackBerry OS" too. The following user agents are identified as tablets falsely:
Mozilla/5.0 (BlackBerry; U; BlackBerry 9300; en) AppleWebKit/534.8+ (KHTML, like Gecko) Version/6.0.0.570 Mobile Safari/534.8+
Mozilla/5.0 (BlackBerry; U; BlackBerry 9900; en) AppleWebKit/534.11+ (KHTML, like Gecko) Version/7.1.0.714 Mobile Safari/534.11+