Provide user with direct, simple access to installed extensions homepages

This can be a list, filterable list, can be put in a panel (like Apps Panel) or Administration.
Reasons:
It can become pretty annoying for users the fact that they install an extension and they do not have quick access to the main page of the extension, where they can use it.
Secondly, the apps panel only lists part of the extensions that are installed on the wiki. The criteria are not clear at all for simple users.