Improve license detection with rules and licenses

[pombredanne]

This PR adds new licenses and license detection rules. It also improves some license and rules metadata. The general purpose is more accurate and faster license detection

Tasks

• [x] Reviewed contribution guidelines
• [x] PR is descriptively titled 📑 and links the original issue above 🔗
• [ ] Tests pass -- look for a green checkbox ✔️ a few minutes after opening your PR Run tests locally to check for errors.
• [x] Commits are in uniquely-named feature branch and has no merge conflicts 📁