Adds the approved meta value for the licences, registered as part of …

[gin0115]

…the meta. Also adds the spdx query filter that comes with the use of wildcards to allow querying

Changes proposed in this Pull Request

• uses ACF to add a an approved meta value for licenses, this is then pulled into the JSON model of a license
• Adds the spdx filter, extended with the use of wildcards

Testing instructions

• See the dev PR for more details Fix/add spdx filter dev #209

Mentions #199