v3.0.7 Beta 8

Fix the DHCP discovery of an existing device showing incorrectly as a new discovery. DHCP packets use the WiFi Mac address, but UDP discovery packets contain the BLE Mac address.

Extend the command back-off time delay to give devices a bit longer to process as hitting them too soon with commands can cause them
to either not respond and on the rare occasion crash the device.

Some minor code improvements.