Changeset 6100

#1233

• Executor now sends all exceptions to the ExperimentManager as NetNamedPipe communication won't be possible in a Sandbox due to security constraints
• count stopped and aborted jobs correctly
• send correct status when a job is stopped by the ExperimentManager
• try to log unhandled exceptions to gui if no EventLog is available
• don't crash if job is sent more than once by server