Error in link opening from "About"

[pierpaolocira]

Hi, I know this is not a critical bug, but I think it is a bit bothering.

Steps to reproduce:

• open "About panel"
• click on the link of this repository (between banner and Credit/License)

Then linked page will open into the about window, instead of a browser window.

I'm using latest release (2.0.18) on a Win7x64 machine and Firefox ESR 38.7 (Firefox 45).