try/except for os.remove & remove DEBUG. Also deal with odd situation where we find a face then add it as a refimg and library cant find a face all of a sudden

person.py

@@ -105,8 +105,15 @@ def AddRefimgToPerson( filename, person ):
         settings = Settings.query.first()
         model=AIModel.query.get(settings.default_refimg_model)
         refimg.face, face_locn = GenFace( filename, model=model.name )
-        os.remove(filename)
+        try:
+            os.remove(filename)
+        except Exception as e:
+            # can fail "silently" here, if the face_locn worked, great, its only 
+            # a tmp file in /tmp - if not, the next if will send a msg to the front-end
+            print( f"Failed to delete tmp file for refimg addition: {e}" )
+
         if not face_locn:
+            st.SetMessage( f"<b>Failed to find face in Refimg:</b>" )
             raise Exception("Could not find face in uploaded reference image" )
             return
         refimg.face_locn = json.dumps(face_locn)
@@ -383,7 +390,6 @@ def remove_force_match_override():
     FaceForceMatchOverride.query.filter( FaceForceMatchOverride.face_id==face_id ).delete()
     db.session.commit()
 
-    print( f"person_tag={person_tag}" )
     # needed to use person_id in job below (allows consistent processing in job_mgr)
     p=Person.query.filter(Person.tag==person_tag).one()