Enable manual usage of locally running wire-server

[akshaymankar]

Webapp repository needed a little change for this to work: wireapp/wire-webapp#17844

Checklist

• Add a new entry in an appropriate subdirectory of changelog.d
• Read and follow the PR guidelines

[supersven]

Some minor nitpicks. Other than that: LGTM 👍

[supersven]

In a perfect world, webapp would have a nix environment because NodeJS et. al. aren't endlessly backwards compatible...

[akshaymankar]

Yes, I was thinking, but then I thought clearly noone would maintain that. So, its probably fine to just nix shell nixpkgs#nodejs ...

[supersven]

I'm usually too lazy to calculate and would write a let or where binding for such numbers. E.g. fiftysixDays = 4838400.

But, that's probably a matter of taste 😄

[akshaymankar]

I copy pasted these from default values of the helm charts and I have no clue what they correspond to, I'd wager noone would care about this until they testing something specific at which point they'd probably just change the values temporarily.