Merge pull request #1852 from pveentjer/findbugs-xmlconfigbuilder

Findbugs xmlconfigbuilder issue resolved
Merge pull request #1851 from pveentjer/findbugs-other-modules

Added findbugs to all modules
Merge pull request #1849 from pveentjer/findbugs-osgi

Findbugs issues resolves in osgi module
Merge pull request #1848 from pveentjer/checkstyles/topic

Topic package checkstyle compliant
Merge pull request #1850 from pveentjer/testing/topic-destroy-remove-statistics

Added a test for ITopic destroy cleaning up topic statistics
Made the executor package checkstyle compliant.

Only the ExecutorServiceProxy needs final cleanup.