removed useless [0] for face_locn in refimg code

shared.py

@@ -139,10 +139,9 @@ def GenThumb(fname):
 # used to store refimg data into the DB
 def GenFace(fname, model):
     img = face_recognition.load_image_file(fname)
-    # TODO: change face_locations call basedon model
     location = face_recognition.face_locations(img, model=model)
     encodings = face_recognition.face_encodings(img, known_face_locations=location)
     if len(encodings):
-        return encodings[0].tobytes(), location
+        return encodings[0].tobytes(), location[0]
     else:
         return None, None