Docs: project.rst: Eliminate reduncency and better explain renderer.
Docs: project.rst: Emphasize key takeaway; use dicts to supply values to templates.
Docs: renderers.rst: Explain typical renderer usage.
Merge remote-tracking branch 'upstream/master' into doc_render

Doing something to make the pull request have the right stuff.
Docs: Make statements more concreate regards renderers getting data from dictionaries.
Docs: project.rst: Fix markup failure just introduced.
Merge pull request #1137 from kpinc/doc_render

Doc render