Support key paths instead of simple keys in sort descriptors. Match Cocoa's behavior here.
Support key paths instead of simple keys in sort descriptors. Match Cocoa's behavior here.

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