group menu - admin view tweak

Issue Summary

First off, thank you for your wonderful module and all the hard work, it is very much appreciated. I was wondering if it would be possible to group the content types that only admins can post in all groups under "administrator posts" or something in the group menu. The problem is, when you have a lot of groups running, all with specific content types in addition to standard posts, it can get a little confusing when administrators view all content they can submit(which includes content types specific just to other groups) into the group along with group "sanctioned" content. If you had a them under a separate menu heading in the group menu it would be easier and you could clearly see what each group can post separate from everything else.

Example:

GROUP MENU

Create Group Content

-create a post (available to all groups)
-create an event (available to all groups)
-create group specific content (whatever is specific to that group)

Administrator Posts

-create other post (whatever for other group posts) - if these could be set to not be listed in other groups at all that would be wonderful (for example I have a music related group who utilizes posting a "guitar chord" - no other groups have any reason to use this, so visibility even to the admin in other groups is not needed and clutters things up)
-create panel page (only available for admins to post in groups)
-create a feed(only available for admins to post in groups)
-create a book page(only available for admins to post in groups)