SONARJAVA-485 Avoid creating findbugs folder for analysis not using findbugs.
SONARJAVA-491 Update description of S1444
SONARJAVA-485 Prevent creation of findbugs directory

Fix bad null pointer exception.
SONARJAVA-455 Anonymous class with one method should be lambda
SONARJAVA-455 Anonymous inner class should be lambdas : Reformat non compliant Java Code
SONARJAVA-463 Abstract classes with no fields should be interfaces
removed data for the rules that didn't make it into this sprint
SONARJAVA-501 NullPointerException when serializing DSMContent
Merge branch 'master' of https://github.com/SonarSource/sonar-java