Checkpoint commit for OPENDJ-1288 : 
  Migrate I18n and logging support to i18n framework and SLF4J

Re-enable active default setting when using a DebugLogPublisher
* Refactor code declaring a debug log publisher at startup if a system property
 is defined, to better dispatch class responsabilities and avoid code duplication
* Default trace setting is enabled, which means debug log is active even if no
 specific DebugTarget configuration is given
* Disable debug log publisher for tests, to avoid slow tests