Fixes from testing:

Certificate files are rejected if not both files are provided
Server shuts down controlled after pressing crtl+c
Logfile location is better checked
improvements for better testing (added ids and name in templates)

cps/worker.py

@@ -487,6 +487,7 @@ class WorkerThread(threading.Thread):
             datetime.now() - self.queue[self.current]['starttime'])
 
 
+# Enable logging of smtp lib debug output
 class StderrLogger(object):
 
     buffer = ''