F-Droid users need to reinstall Arcticons or Arcticons Black

Reproducible builds are gonna be enabled with the next version.

This is also a fix for F-Droid users, some changes broke F-Droid's store listings, this release aims to fix that.

What's Changed

• Change path Case by @Kaiserdragon2 in #1876
• Fixes and Extended Coverage by @TotallyAvailable in #1872
• Rename flavor folders and update dashboard titles with the new flavor names by @petlyh in #1879

Full Changelog: 8.3.0...8.3.1