USBHostSwitcher: Add copyright notice

Also remove unused string

Change-Id: I00b7d24f7ac1423e94cdaf84257f4d2219fb8b97
USBHostSwitcher: Update resources

Change-Id: Ifb3f9813e37a35d77709be39a50029a2758f516a
USBHostSwitcher: NL translation

Change-Id: I3baa4ad06c4f372635acb5d262d196364ec278a0
USBHostSwitchet: ES translations

Change-Id: I3fde11e625d6e9fbbd7182aa92527d94c7f10265
USBHostSwitcher: EL translations

Change-Id: Iaa05b18c0a4be94cd72c80f5187af025a7605d00