usb-import fails if just 2 partitions

[borpin]

backup/usb-import.sh

Line 59 in 9cfc5b8

if [ "$partprobe" == "/dev/$diskname: msdos partitions 1 2 3" ]; then

As per discussion (and solution) here the import fails if there are only 2 partitions i.e. the data is on the root partition.

The script recovers from this later when looking for the mysql database, but not for the data files in /var/lib.

Suggest an extra check is made to find the data folders (including phpfiwa).