Possibility to add custom link to Profile Menu

There is often need to have one "central workspace" or even link to external website (like intranet) from Howspace workspaces. Best place for such a link would be in "Personal" section at Action menu. Here is quick example of such a link:

This link label and URL should be possible to define from Main User App. Also possibility to adjust that is it visible for all participants or only for participants with certain email domain (so the link could be "internal" or "external").

By default there wouldn't be any link, so this feature would be "opt-in".

There is definetely need for that, good job!