Upstream improvements from doubledashio-forks

[ErikBjare]

@murphyalexandre and some of his colleagues have been working on a fork of ActivityWatch for some research purpose (it seems?).

Among the changes, they've implemented some cool stuff.

Here's an overview, by repo:

• aw-server: https://github.com/ActivityWatch/aw-server/compare/master...doubledashio:master
  • Not anything we can really use.
• aw-server-rust: https://github.com/ActivityWatch/aw-server-rust/compare/master...doubledashio:master
  • Not anything we can really use.
• aw-webui: https://github.com/ActivityWatch/aw-webui/compare/master...doubledashio:master
  • [ ] Internationalization (i18n) (https://github.com/ActivityWatch/aw-webui/issues/2)
• aw-client-js: https://github.com/ActivityWatch/aw-client-js/compare/master...doubledashio:master
  • ~~Added custom endpoints for their research purposes (fetch categories from a centralized server, export data to central server, etc).~~ (not relevant for upstream)
• aw-android: https://github.com/ActivityWatch/aw-android/compare/master...doubledashio:master
  • [ ] Various bugfixes

I also just emailed @murphyalexandre and asked for a call, we'll see where that leads :)