I saw @klausi's tweet https://twitter.com/_klausi_/status/766028808243843073 this morning, lets not stop the development of Dreditor so quickly. I am sure there are many people who would like to maintain it - for the sake of learning, or as contribution to Open Source.
I would like to become the maintainer of Dreditor for Chrome. I think in future other people would be willing to help fix the issues for Firefox.
About my JavaScript skills - I'm learning JavaScript since last year, you can view my JavaScript repos here https://github.com/subhojit777/js-projects.
@klausi mentioned that we can fork the repo, and I was not able to find any open issues here https://github.com/unicorn-fail/dreditor/issues. Let me know what are the existing issues for Chrome and how I can help.