extra Help menu entries for only staff/moderators (community management links)

Adds links to the bottom of the Help menu for various documents used by staff and moderators. This links are visible to only players who have the "admin" flag set. Requested by Breadstrings in https://plus.google.com/114447825469587375506/posts/eFSCmDTsLxr

![screen shot 2014-10-03 at 8 24 57 am](https://cloud.githubusercontent.com/assets/1495809/4499464/111c99da-4a83-11e4-92ab-99386d0e6d26.png)

@lemoness : Is this okay?
@deilann @paglias I'm on the fence. Google's pretty solid on access restriction (aint nobody getting into that stuff). We could put it in the private repo (if it comes to that, @Alys we'll talk and I'll show you the ropes). But personally, methinks easier in the pub repo given G's security