I think that project made for Linux users is useful and it's open source project. I don't understand your arguments, because LGT project (all our GUI tools) are useful for Linux beginners, it's simply

.idea - the folder creating by Intelij IDEA IDE - in my opinion the best Java IDE, there were files what describing IDEA Project structure. That's need for IDE to correctly import project. So, I can't

I can delete idea folder from repository. GUI is needed, because I and my friend are making some GUI tools, and next we will make an app, which will have all this GUI tools in one place. And our GUI tools

I know what the problem is. I uploadted my project from GitKraken, where my account has nick "T.Lisak", so on GitHub site display my GitKraken nick.