Special-case differentiate Devel suffixes for Leftover Data view

[nekohayo]

• I have read the README.md document
• I am using the latest version of Warehouse
• I am using the Flatpak package of Warehouse
• I have not found any other opened issues on the same topic

Describe the issue in detail

1. Install some GNOME Nightly apps
2. Uninstall them through the commandline or some other means, or refrain from clearing their user data
3. View the "Leftover Data" tab in Warehouse

Result: a bunch of apps are called "Devel"…

Maybe there should be a special case for things that end with "Devel" or ".Devel", so that they say something like "Papers (development version)" or "Papers (nightly)" or something like that.

That would probably cover a lot of situations, though there are stranger cases like Epiphany having two different development versions:

org.gnome.Epiphany.Canary
org.gnome.Epiphany.Devel