* Remove :members: from fileserver docs pages
These functions can never be invoked directly from the CLI, so it is
pointless to include them in the documentation.
* Rename section
* Add docs page clarifying how to get files from different environments
* Add reminder that file_roots can be specified for masterless salt
* Link to the new environments page from the states tutorial
* Add information on pulling reactor configs from non-base environments
* Add examples of querystring syntax to cp module
This commit turns some of the config file parameters into links to the
master config file docs, and also links to the pages for the fileserver
backends being described.
