Lock ui when device lock is active and display off

Device is locked by default during bootup. Locking ui based solely
on device lock status caused termination of extended boot time display
dim delay and too rapid display blanking during pin query.

[mce] Lock ui when device lock is active and display off
Merge pull request #128 from spiiroin/bootup_device_lock

Lock ui when device lock is active and display off
Bump mce version to 1.23.5