Publish PDF to S3 if available

[spohnan]

• Extract documentation.pdf from site archive within our tarball distribution so it's more obvious
• Copy documentation.pdf to S3 if aws command is availble
• Link to pdf from our docs
• I added a docs directory to our geowave S3 bucket and added a policy that makes everything public
• Worked around an Asciidoc formatting bug where the end of one section uses a formatting construct like a list or a table and it does not correctly recognize the next section marker. I changed a bullet list into two paragraphs

[coveralls]

Coverage remained the same at 57.18% when pulling eab47f4 on publish-pdf-doc into 50f31b5 on master.