Use gradle wrapper for build.
Enable findbugs.
Use checkstyle.
Add better documentation.
Add comments.
Disallow trailing whitespace.
Streamline environment interface.
Add docs to Environment.
Remove trailing whitespace from checkstyle.xml
Remove empty checkstyle from build.gradle
Remove unused dependencies.
Remove unused RaportGenerator.
Reorg some files.
Fix javadoc warning.
Add documentation to LocalEnvironmentFactory.