Add clean function in SpeciesData

speciesData.py

@@ -15,7 +15,7 @@ class SpeciesData:
 
     """
 
-    def clean_string(string):
+    def clean_string(self, string):
         if not string is None and string != "":
             clean_string = string.replace(" ", "_").replace("-", "_").replace("(", "").replace(")", "").replace("'", "").strip()
             return clean_string