Remove useless commands

[ArktinenKarpalo]

Such as one to empty terminal. (possibly replace with h for help)

move some infrequently used stuff under another menu (rfid, password change)

this is to de clutter menu and improve user experience

[ConcernedHobbit]

Will replacing two commands with one benefit UX enough to justify worsening it in specific scenarios (when user wants to link RFID or change password)? Alternative menu layouts could also be explored to reach the end goal (clearer options).

[ArktinenKarpalo]

Indeed, some alternative solutions could be considered.