This commit reorganizes the documentation files to get around an earlier issue with the asciidoc maven plugin not generating man pages and contains the configuration to replace the current https://ngageoint.github.io/geowave/ site. The two new content pages, PDAL and GSOC 2015 have also been migrated into the new format.

EPUB3 support has been added with a new (alpha) library. The epub output looks pretty bad at the moment but we can follow along and at the point it's decent we could start distributing in that format. Man pages are still generated but only by the backend Jenkins worker that has the native asciidoc package installed.

For ease of inspection I've pushed the site generated from this commit to my fork and can be viewed at http://spohnan.github.io/geowave/

To generate the documentation locally check out this branch and run the command mvn -P docs -pl docs install and look under the target/site directory. I ended up using a black on white stylesheet as it seemed more readable but docs/pom.xml line 196 can be changed to <stylesheet>slate.css</stylesheet> or a new stylesheet could be created if the dark theme is desired.