Cappuccino Cappuccino

improve key view loops

• include the window's content view at the start of the key view loop
• set the initial first responder to the window's content view (and keep it that way unless it is explicitly changed)
• CPWindow should return NO from acceptsFirstResponder (Cocoa compliance).
• change the type of setInitialFirstResponder, this is compliant with Cocoa. The new key view loop code will break if initial first responder is anything but a view
• change the implementation of selectNextKeyView:, selectPreviousKeyView:, selectKeyViewFollowingView: and selectKeyViewPrecedingView: to follow to Cocoa's documentation https://github.com/cappuccino/cappuccino/commit/67b2671dad5398eda84...