Replaced the network which must not be named with integration network

[Dr-Electron]

Description

As discussed I renamed the private tangle folder to integration_network. I also removed it from releases as I guess we don't want to do that anymore. Not sure if you want me to rename anything else

Fixes #1940.

How Has This Been Tested?

Run locally.

Checklist:

• [x] My code follows the style guidelines of this project
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
• [ ] I have tested my code extensively
• [x] I have selected the develop branch as the target branch