Updated the Loggregator Emitter gem

Signed-off-by: Stephan Hagemann <stephan@pivotallabs.com>
Revert "Revert "Refactor StagingsController""

This reverts commit bbe4fc74b45d9dd623e3e917cebbbad7aa674557.
Fixed the flakey test.
Show SQL statements in logs
Delete old droplets when a new one uploaded
Merge pull request #105 from cloudfoundry/loggregator_emitter_gem_update

Updated the Loggregator Emitter gem