Use unicode chars for in-table progress.
Use unicode chars for in-table progress.

We use unicode chars like ✓, ⍻ and ✗ for the checkmark area in the table.
Also use an em-dash instead of minus in the spinner.

Closes: #2449
Approved by: alexlarsson

matthiasclasen/flatpak,matthiasclasen/flatpak,flatpak/flatpak,flatpak/flatpak,flatpak/flatpak,flatpak/flatpak,matthiasclasen/flatpak,flatpak/flatpak,matthiasclasen/flatpak,matthiasclasen/flatpak