Link to new features in about incomplete

[ReimarBauer]

We have added a link to the about section. The version string is to short used there.

Currently it goes to https://github.com/Open-MSS/MSS/issues?q=is%3Aclosed+milestone%3A10.0.

We should also try to add a test for that feature.

[divyaajainn]

Hi, I would like to give this issue a try. Could you assign this to me?

[ReimarBauer]

Hi @divyaajainn you have it. This needs to become a PR to the stable branch.