Fix copying in K70 keymap build

Apparently friendlyName is not copied.
(Daemon) Add ability to get and set profile/mode GUIDs
The modification time is actually 4 bytes, not 2. Also, there's no point in changing it except when saving to hardware.
(K70 Fix) Merge branch 'master' of https://github.com/hysw/ckb
Don't try to write cmd if it's not actually open