OK, I did some research, and will spend this Friday on making 3 changes:
1. make a custom ru->en dictionary out of this excellent wiktionary dump:
https://kaikki.org/dictionary/Russian/ .
2. I will change the google search or wikipedia search into a google translate search like this:
Code:
https://translate.google.com/?sl=ru&tl=en&text=Special:Search&op=translate
3. Finally, add the cyrillic keyboard,
Then we almost have a perfect russian language learning device

The only thing is that "My Words" is not saving lemmas, but forms of the words as they are found in the text, but I can live with that. I will update this post as soon as I have the custom dictionary (and add it to that dictionary thread)