Set to 1.5 for importing into ports

Don't require a boot disk for uefi

It's possible to boot a guest directly from a passthru device
Github issue #344

sort info snapshots by creation

Tag a 1.3 version

Wrong commands listed in cms::parse_image

Remove beta label

Import switch name/descr change from master before 1.2 rel

Useful feature as, if switch names are <= 12 characters, users can reference
the interface by the fixed switch name rather than the dynamically assigned "bridgeX"

Tidy up some switch code and set as 1.2-beta2

Re-tag current release as a beta

Remove the NAT commands other than the core command with a warning me…

…ssage

It's actually far easier and less error-prone to create a standard or manual
switch, then configure whichever NAT service the user wants to use manually.