write messages corresponding to action (dark or correct)

@karnem

Before, it was always written in the log file success: started correction in case of requesting dark or correction. Now it should not be the case.

Also, I corrected the path for the calibration_configuration prev. changes

webservice/serve_overview.yaml

@@ -53,4 +53,4 @@ server-config:
 
 web-service:
     job-db: ./webservice_jobs.sqlite
-    cal-config: /home/xcal/calibration_config/
+    cal-config: /home/xcal/calibration_config/default.yaml