bug(os): calamares distro help/support buttons do not work

[Elsie19]

Rhino Linux version & platform:
Any

What distribution component is causing issues:
os

Describe the bug
When clicking on any of the lower buttons for help/support in calamares, it opens a terminal and complains that www-browser is missing. If I install lynx for example, it loads correctly, but it's a terminal web browser and is running as root.

To Reproduce
Steps to reproduce the behavior:

1. Boot live ISO
2. Launch calamares
3. Click on any of the help/support buttons

Expected behavior
For it to:

1. Open Firefox
2. Open without root