System Check

Repomaker has quite some dependencies. Even though they are listed in the README.md, most users will have trouble with them.

Therefore, I propose to add a system check that should become part of the installation procedure. This will check if all dependencies are in place and working. If something is working it will get a green checkmark, if it is not, it will get a red cross with information about how to fix the problem. At the end, in case of problems there should be a button to re-run the system check.

Alternatively, we might also just hook into Django's System check framework.

added feature-request label

We need at least git 2.3.0 for uploading to remote git storage with a dedicated SSH key.

changed milestone to %1.0

added dev label

assigned to @grote

added Doing label

closed via merge request !145 (merged)