Get rid of GITHUB link

Hello! :wave:

I can see that the Github button was added in 1.68.0 here, a dismis button was added in 1.69.0 here, and a tooltip position was corrected in 1.70.0 here.

But in this message, @octionic suggested to put this button elsewere for UX reasons, and here @Antonio1 asked to disable the button with a environement variable. He also suggested a solution here.

Dear n8n team, could you consider the possibility to move or hide this button with env var, please? Thank you :slight_smile: