Binary flags for files are always set to True #626

Description

Example scan:
postgresml-2.8.1.json

See for example the resource at: "path": "postgresml-2.8.1/pgml-cms/blog/announcing-support-for-aws-us-east-1-region.md"
Here the flags are:

"is_binary": false,
"is_text": true,
"is_archive": false,
"is_media": false,
"is_source": false,
"is_script": false,

But after importing this scan in SCWB we have all the flags set to True.

Also related: License Text % is set to 0 even for directories. This should be set as Blank otherwise it's misleading.