Refactor WebLinkMatcher.ts and add additional.

# ExtLinks.css:
- Re-order ExtLinks.css by logo image name alphabetically.
- - With exception for those those that have a logo in a different repository, move those to the top.
- Clean up usage of background-image vs background.
- Fix icon matching with links that only matched to http:// to also work with https://
- Add icon matching with links that did have icons, but were not being used.
- Add additional icon matching with new icons (see: VocaDB/ExtIcons#7)
- Icon matching via ^ match or * match has been left mostly the same, could still be a discussion point.
- Clean up styling.

# WebLinkMatcher.ts
- Add additonal Weblink matchers relating to VocaDB/ExtIcons#7

Author: Calamitish