Missing/undetected janitor.json config + weird Git prompt + noVNC uses flexbox instead of KDE

[jankeromnes]

Thanks a lot for revamping the KDE image! It is now live on https://janitor.technology/projects/

I quickly gave it a spin, and found a few issues with it:

• There doesn't seem to be a janitor.json configuration, so there aren't any one-click developer workflows available under the Run button
• The Git prompt is a bit unexpected (the branch is left instead of right, but maybe that's on purpose because you prefer it that way).
• Also, the default IDE workspace seems to be /home/user instead of /home/user/kdesrc-build, is that expected? (Maybe it's because /home/user/src and /home/user/usr are there as well?)
• Additonally, the noVNC tab doesn't use KDE anymore, but Fluxbox. This may be wanted, because Fluxbox is lighter than KDE, but then again I don't see how a Fluxbox graphical environment would be useful for KDE development.

Thanks again for the great work! 👍 💯