Fix backgrounds + misc in Island of Moob

[toberge]

• Swapped backgrounds that were using old filepaths and thus did not render
  properly
• Replaced some backgrounds with gradients since there did not seem to
  be viable alternatives to the backgrounds that have been removed
• Expand the first sector of the quiz level to avoid black bars in
  fullscreen at 1080p
• Adjusted the placement of some spawn points in the Tower of Moob level

See the related PR in the addons-src repo

[Vankata453]

This updates the worldmap in the "Worldmaps/" directory, which is unused. The addon needs to be updated in the "repository" directory, by adding a new version and editing the URL, version and MD5 hash in "index_0-6.nfo" file.

[Vankata453]

I am planning to open a pull request, which does re-organization to the repository + adds some important changes for future versions, like the new contrib-type property to add-ons. If you agree, I can commit your changes there directly.

[toberge]

I am planning to open a pull request, which does re-organization to the repository + adds some important changes for future versions, like the new contrib-type property to add-ons. If you agree, I can commit your changes there directly.

That's fine with me, it does seem like this repo needs some spring-cleaning. I did at least put the archive file where it should be now.

[Vankata453]

I am planning to open a pull request, which does re-organization to the repository + adds some important changes for future versions, like the new contrib-type property to add-ons. If you agree, I can commit your changes there directly.

That's fine with me, it does seem like this repo needs some spring-cleaning. I did at least put the archive file where it should be now.

Alright, I will include the changes, as well as the contrib-type addition. 👍

[weluvgoatz]

Included in #37