Fixes MV3 and many Geneanet improves

[pquenee]

I fix a bug in background.js in the complex use in ".then" .
I introduce a delay to bypass nginx limitations.
In geneanet improved name detection and various formatting and filtering, date recovery ...
Everything is far from perfect, but this version optimizes the copy on geneanet

[eljeffeg]

I haven't had time to review, but @GuyKh can merge. Whenever we're ready to push a new version out, just let me know and I'll send it off to the browsers.

[GuyKh]

@eljeffeg. I can merge, but I really want some eyes on the changes. Don't feel I'm fully understand all the changes.

[pquenee]

Sorry for my silence, I don't check my email attached to gitHub frequently. I can be reached directly at [email protected]
I'm not a great specialist in Javascript, HTML and others, but I've been trying to survive in computer code for 50 years. (from IBM360 to Pick.system R83 and many others). I try, as much as possible, not to damage what I touch. Sincerely

[eljeffeg]

@DanCornett can you test these pull requests. I don't have time to try them but would love to get them merged, but don't want to blindly do it without testing.