remove popover with its viewController
remove popover with its viewController

when presenting BWHockeyViewController modally, as
a sheet on the iPad and the "Done" button is pressed,
BWHockeyViewController removes itself from the navigation-
stack but leaves an optionally visible settings popover behind.
This patch dismisses the popover when BWHockeyViewController goes
away.

wedkarz/HockeyKit,whitehorse1/testfairy,SuPair/HockeyKit,cnbin/HockeyKit,cnbin/HockeyKit,wedkarz/HockeyKit,k2s/HockeyKit,k2s/HockeyKit,udomsak/HockeyKit,alloy/HockeyKit,SuPair/HockeyKit,bitstadium/HockeyKit,hejunbinlan/HockeyKit,cnbin/HockeyKit,alloy/HockeyKit,whitehorse1/testfairy,hejunbinlan/HockeyKit,alloy/HockeyKit,udomsak/HockeyKit,wedkarz/HockeyKit,whitehorse1/testfairy,bitstadium/HockeyKit,bitstadium/HockeyKit,udomsak/HockeyKit,wedkarz/HockeyKit,whitehorse1/testfairy,hejunbinlan/HockeyKit,SuPair/HockeyKit,hejunbinlan/HockeyKit,k2s/HockeyKit,k2s/HockeyKit,SuPair/HockeyKit,udomsak/HockeyKit,SuPair/HockeyKit,udomsak/HockeyKit,k2s/HockeyKit,hejunbinlan/HockeyKit,wedkarz/HockeyKit,cnbin/HockeyKit,whitehorse1/testfairy,alloy/HockeyKit,bitstadium/HockeyKit,cnbin/HockeyKit