added more link matchers

[kateabr]

added link matchers and icons for awa, deezer, linkcore, commons.nicovideo, recochoku and seiga.nicovideo

[ycanardeau]

Deployed to the beta site.

[kateabr]

Should I replace background: url('...') no-repeat left 50%; with .extLink as well?

[ycanardeau]

Should I replace background: url('...') no-repeat left 50%; with .extLink as well?

Since removing left 50% causes an unwanted side effect, I think it's fine to leave it as is for now.

[ycanardeau]

Thanks!

[ycanardeau]

@kateabr Please don't forget to run the Prettier code formatter every time you save a file. I strongly recommend you set up a development environment (if you haven't done it yet) and run the npm run watch (or npm run dev) command before pushing changes to GitHub.