Rebase modupdater

[SuperSandro2000]

Based on work from https://github.com/ALovedOne and https://github.com/patschi

Needs proper testing!

[carlbennett]

I think these changes broke the latest version of the image. See #268 and #269

[carlbennett]

The .sh files added in this change are not marked executable (chmod +x).

[SuperSandro2000]

@Fank If I write that it needs proper testing then I mean I did not test it properly and it shouldn't be merged. We need to communicate this better next time.

[Fank]

I thought people were using it so I was thinking it's maybe bugged with mod, and not making it unstable

[SuperSandro2000]

I should have written in the description that I changed it slightly. Next time we do it better.

[carlbennett]

In my report #268, I don't have any extra mods loaded, just the base mod from Factorio that you can't disable. It was breaking on new setups too.

[SuperSandro2000]

I will take another look at it later today and fix it.

[SuperSandro2000]

@carlbennett Can't reproduce that. Did you pull the latest image?

[carlbennett]

@SuperSandro2000 My fixes from #272 fixed the problem. It's been fixed since yesterday. I was commenting in reply to @Fank's comment:

I thought people were using it so I was thinking it's maybe bugged with mod, and not making it unstable

I had no mods loaded besides the base mod that you have to load.

There is no present bug in the latest head on master (6ae5795).