Use correct icons for online accounts
[not really a bug]
When trying to connect an online account via gnome calendar there are 3 choices to connect to: google, nextcloud and microsoft exchange. The Nextcloud icon shows the icon of Owncloud. This should be changed.
Also the Google icon looks like an old logo. And there's no icon for Microsoft Exchange.
Tested Gnome-Calendar 3.28.2
Edited by Ghost User