Ref #18, updated codership.css to add some spacing under headings, lists and paragraphs
Ref #25.  Genereal revision on index.rst and the Overview section.  Removed Overview from the docs.  The text from overview.rst and benefits.rst has been moved up onto index.rst.  The links for versioninginformation.rst and thirdpartygaleraimplementations.rst were moved onto reference.rst.  Trimmed the legal notice from index.rst and used the text to create legalnotice.rst, which is linked into the docs through reference.rst.