Fix Hardware keyboard switching

Change-Id: Ibe08e6de55e074aaf72f5b0066e2a92b30530a69
Config change

Do not turn screen on when unplugging
Do not use alpha transformations in transitions unless needed

Change-Id: I347ab3e77eb2972d7f3920a55480a757a0b909e1
remove old texfat module

Change-Id: I50144ad12efc1f38214da096cbf9b0ff4b114113