Added some filtering for common naming schemes.
- Collapse multiple hyphens
- Leading and trailing hyphes
- remove [ ] with empty spaces,
- Collapse extra spaces
- Improved Settings options

Added import button in settings menu for the following sites:
- GitHub: https://raw.githubusercontent.com/*/*.json
- Pastebin: https://pastebin.com/raw/*
- GitLab: https://gitlab.com/*/raw/*
- Bitbucket: https://bitbucket.org/*/raw/*
- GitHub Gist: https://gist.githubusercontent.com/*/*.json