Fix appWindow.openURL
The function "openURL" of the main window tries to use the nonexistent function "openURL". The correct name is "openUrl". This fixes clicking the center ring to go a directory up.
The function "openURL" of the main window tries to use the nonexistent function "openURL". The correct name is "openUrl". This fixes clicking the center ring to go a directory up.
mentioned in commit 517a0329