copy retrieve_constant to slurm and leave latest copy in out-folder

Small fix to copy the retrieve_constant.yml to slurm_out_*, while leaving the latest copy in out_folder to be overwritten with new recorrections.

@danilevc @kamile

xfel_calibrate/finalize.py

@@ -205,8 +205,8 @@ def make_report(run_path: str, tmp_path: str, out_path: str, project: str,
     """
     run_path = path.abspath(run_path)
     report_path, report_name = path.split(report_to)
-    
-    if report_path == '':
+
+    if not report_path:
         report_path = out_path
 
     try:
@@ -305,7 +305,7 @@ def make_report(run_path: str, tmp_path: str, out_path: str, project: str,
 
     except CalledProcessError:
         print("Failed to make pdf documentation")
-        print("Temp files will not be deleted and " +
+        print("Temp files will not be deleted and "
               f"can be inspected at: {run_path}")
         return