Fix Javadoc Errors

Summary
---
* Disable doclint
* Explicitly specify maven-project-info-reports-plugin version (the warning was annoying)

It seems that Java 8 has gotten quite strict with doclint (i.e. won't compile unless you match the rules). This caused failures in `mvn site` since there's a bunch of functions
that don't have `@param @return`, etc. The 'proper' solution would be to fix all those, but there is a LOT of them.

More information: http://blog.joda.org/2014/02/turning-off-doclint-in-jdk-8-javadoc.html