Fixed: if a custom CPTableView header view was used for a column, such as a CPImageView, sorting by that column would cause an exception as CPTableView tried to send _setIndicatorImage: to the view. The fix is to only send the message if the view supports it.
Fixed: if a custom CPTableView header view was used for a column, such as a CPImageView, sorting by that column would cause an exception as CPTableView tried to send _setIndicatorImage: to the view. The fix is to only send the message if the view supports it.

rgv151/cappuccino,cappuccino/cappuccino,mrcarlberg/cappuccino,cacaodev/cappuccino,tancred/cappuccino,krodelin/cappuccino,koamac/Cappuccino,mrcarlberg/cappuccino,cappuccino/cappuccino,deltaprojects/cappuccino,deltaprojects/cappuccino,mrcarlberg/cappuccino,eventualbuddha/cappuccino,Dogild/cappuccino,cappuccino/cappuccino,cacaodev/cappuccino,krodelin/cappuccino,enquora/cappuccino,deltaprojects/cappuccino,Rosch/cappuccino,tolmasky/cappuccino,akshell/cappuccino,koamac/Cappuccino,cacaodev/cappuccino,eventualbuddha/cappuccino,AlexanderMazaletskiy/cappuccino,FrankReh/cappuccino,krodelin/cappuccino,FrankReh/cappuccino,zittix/cappuccino,kidaa/cappuccino,eventualbuddha/cappuccino,rgv151/cappuccino,krodelin/cappuccino,akshell/cappuccino,cappuccino/cappuccino,daboe01/cappuccino,dgvivero/CappCoreData,mrcarlberg/cappuccino,daboe01/cappuccino,primalmotion/cappuccino,primalmotion/cappuccino,AlexanderMazaletskiy/cappuccino,daboe01/cappuccino,cacaodev/cappuccino,eventualbuddha/cappuccino,tancred/cappuccino,wangshijin/cappuccino,kidaa/cappuccino,deltaprojects/cappuccino,AlexanderMazaletskiy/cappuccino,AlexanderMazaletskiy/cappuccino,wangshijin/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,Dogild/cappuccino,mrcarlberg/cappuccino,Rosch/cappuccino,tolmasky/cappuccino,kidaa/cappuccino,cappuccino/cappuccino,daboe01/cappuccino,rgv151/cappuccino,dgvivero/CappCoreData,koamac/Cappuccino,deltaprojects/cappuccino,dgvivero/CappCoreData,enquora/cappuccino,cacaodev/cappuccino,krodelin/cappuccino,zittix/cappuccino,Dogild/cappuccino,kidaa/cappuccino,280north/cappuccino,FrankReh/cappuccino,FrankReh/cappuccino,280north/cappuccino,280north/cappuccino,280north/cappuccino,Rosch/cappuccino,zittix/cappuccino,rgv151/cappuccino,mrcarlberg/cappuccino,enquora/cappuccino,daboe01/cappuccino,mrcarlberg/cappuccino,FrankReh/cappuccino,enquora/cappuccino,280north/cappuccino,tancred/cappuccino,FrankReh/cappuccino,dgvivero/CappCoreData,FrankReh/cappuccino,rgv151/cappuccino,koamac/Cappuccino,dgvivero/CappCoreData,primalmotion/cappuccino,FrankReh/cappuccino,krodelin/cappuccino,koamac/Cappuccino,krodelin/cappuccino,kidaa/cappuccino,Rosch/cappuccino,enquora/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,rgv151/cappuccino,AlexanderMazaletskiy/cappuccino,tancred/cappuccino,kidaa/cappuccino,zittix/cappuccino,Rosch/cappuccino,koamac/Cappuccino,cacaodev/cappuccino,Dogild/cappuccino,tolmasky/cappuccino,wangshijin/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,primalmotion/cappuccino,deltaprojects/cappuccino,tolmasky/cappuccino,mrcarlberg/cappuccino,AlexanderMazaletskiy/cappuccino,cacaodev/cappuccino,tancred/cappuccino,enquora/cappuccino,rgv151/cappuccino,primalmotion/cappuccino,akshell/cappuccino,wangshijin/cappuccino,zittix/cappuccino,primalmotion/cappuccino,enquora/cappuccino,Dogild/cappuccino,primalmotion/cappuccino,Dogild/cappuccino,tolmasky/cappuccino,cappuccino/cappuccino,Rosch/cappuccino,tancred/cappuccino,akshell/cappuccino,zittix/cappuccino,deltaprojects/cappuccino,zittix/cappuccino,Rosch/cappuccino