This resolves bug 414 https://bugs.hamaralinux.org/show_bug.cgi?id=414

add license at top

add license at top

update avatar

script.
This edits the sources.list in a cleaner way

package as it was causing the builds to fail due to
interactive prompts.

- Package was modified following the changes in the upstream
calamares-settings-debian package.

- This would resolve bug #393

- added the welcomeStyle option in branding, explicitly

setting the security repo from buster to testing. So we don't have to keep changing them every time for newer releases

- The Calamares Installer now follows the Hamara style guide for the
colours on the sidebar

- Added a line to extended description