Remove references to Binary Factory referencing KDE's GitLab instead
Android:
- Reference our F-Droid repositories for stable and nightly builds.
- Reference KDE's GitLab as alternative for downloading APKs.
Flatpak:
- Replace a reference to Binary Factory with one to KDE's GitLab.
Windows:
- Point to KDE's CDN as alternative download location for installers.
- Use NeoChat as example since there are no Windows builds of Kile.
- Mention that one needs to uninstall a previously installed sideload APPX before installing a new one.
About Flatpak: I think the documentation needs a major update because things have changed. But that's out of scope for this MR and I'm the wrong person to write about Flatpak creation.
Edited by Ingo Klöcker