Environments page

- Adding to guide section
- Updating for 2.2
Finishing main restructure.
Admin menu customization docs.
Updating some basics for the field type structure page.
Updating the getting started guide.

Not there yet, but close.
Updating the git workflow page.
Grammar fix for git workflow.
Getting getting started ready for 2.2.
Working on some change log updates.
Fixed changelog link
Updated the reference links
Added the "tagged" attribute to the files plugin
Added a rewrite rule so the upgrade link in the downloaded README works
Use local jquery so we can see the code formatting when
not connected to the internet.
Updating the blog module docs.
Intro to modules.
h4 style.
Merge branch '2.2' of github.com:pyrocms/pyrocms-docs into 2.2
Corrected page docs referring to {{ custom_fields:foo }} rather than the double tag
Merge branch '2.2' of github.com:pyrocms/pyrocms-docs into 2.2