Properly implement parallel installation of development build
Depends !20 (merged)
This has been done following https://gitlab.gnome.org/GNOME/Initiatives/-/wikis/DevOps-with-Flatpak
Includes:
- Renaming devel from org.gnome.Evince.Devel to org.gnome.EvinceDevel
- Building devel in flatpak
- Setting the window style to devel
- Updating metainfo
- Setting a suffix in the about page
- Renaming the build option to follow instructions since we're not upstream.
Edited by Pablo Correa Gomez