x11drv: Allow ActivateKeyboardLayout to set the keyboard for the thread and GetKeyboardLayout to return the stored keyboard.

x11drv: If a keyboard layout is an IME only check the loword when comparing to the x11 keyboard layout.

Now that all the certificate extensions/properties/whatnot are shown,
the if check is unnecessary.

cryptui: Ignore additional prop sheet pages when calling CryptUIViewCertificateW from CryptUIViewCertificateA.

We already behave correctly here, the test just verifies it.