Add is_legal and all "classify" attributes to Resource model

[pombredanne]

We need to add the "is_legal" and all "classify" attributes when running a "scan_single_package" in ScanCode.io.

This should also be part of the output of the api/projects/<...>/summary/ endpoint, (this likely will come for free)

Also:

• [ ] DejaCode: Add is_legal and all "classify" attributes to Resource model