Move "Statistics" from main nav to community and collection introduction

[mfgaede]

Is your feature request related to a problem? Please describe.
Current "Statistics" link in main nav lacks context for users to understand it will show different statistics depending on location (Item statistics if on an item page, Collection statistics if on a collection page, etc.).

Describe the solution you'd like
I would like to add a button to the end of community / collection introduction that reads "Community Statistics" or "Collection Statistics", as relevant, that, when clicked, leads to the community or collections statistics page, as seen in this wireframe, where there is no introductory text:

and this wireframe, where there is introductory text:

Describe alternatives or workarounds you've considered
We could change the text of the main nav link to read "Community Statistics" or "Collection Statistics" to provide the needed context, but I don't think the location is user-friendly.

We could include the button below the community, but I don't think the location is user-friendly or as clear as to what might be included in the statistics, as seen in this wireframe: