Change name - Round 2

[daudix]

Recently, a member of GNOME asked us to change the name because Adwaita Manager look like an official app.

So, we found some names, and after Round 1, here is a more filtred list

[NOTE] Team, project and matrix chat names will also be changed

Thanks everyone for voting 👍 vote is ended, and a winner is Gradience!

[0xMRTT]

Hard to choose between gradience and paint roller

[daudix]

We can publish a post on GNOME Reddit for more objective results

Edit: Done!

[tseli0s]

Didn't we already go with Gradience? I thought I saw it in some labels. Anyways, whatever the name is, leave it to me to change the source, so I get to commit something :P