NewCaw shares tray with Cawbird

[IBBoard]

Just poking NewCaw and found that it's sharing the tray with my existing Cawbird app in Gnome.

On the one hand, it makes sense because it's just the new Cawbird.

On the other hand, it's 1.x and 2.x and it's a big change, rather than 1.3.x and 1.4.x.

Not sure whether we need to fix it or not.

[CodedOre]

That's probably something to be expected. The desktop file contains the same name and is store under (almost) the same name...

The question is if we want to make development builds to be split up. I already set the application id to uk.co.ibboard.Cawbird.Devel when building with debug mode, so it would make sense to do this on the other places with the id as well.

[CodedOre]

Alright, I finally got around to improve the build of desktop files and icons. If it works as expected we could close this.

Two notes:

• The data folder has now two desktop files, one for a release version and one for the development one. We should look if meson could append the development parts so we don't have two files.
• I also now have included the new icons from new gnome style icons IBBoard/cawbird#452, I think we should use them in upcoming versions.

[IBBoard]

+1 on using the new icon. We've not come up with a different name yet, and it makes more sense to switch with the new app rather than switching the existing app.

With the desktop file, it does support .in files for other things. I suspect there's also a workaround using templates and output paths, but that might not be as clear. I've never tried, though, and I didn't always find the Meson documentation all that helpful.