Workflow and common patterns documentation

  doc/common-patterns.mkd - New document showing common patterns to advise users.
  doc/dynamic-environments/workflow-guide.mkd - New document outlining initial workflow guide.

Directly addresses workflow questions in GH-120.
Only one h1. section should be defined per page; this is generally the title. There are several h1. instances in this document, so those should be shifted down a level and there should be an h1. section at the top which is the title of the document.