fix picture_path

utilities.py

@@ -179,6 +179,7 @@ def get_sp_picture(sp_dict_list):
         gspecies = get_gspecies_string_from_sp_dict(sp)
         if gspecies not in sp_picture_dict.keys() or ( constants.ORG_PARAM_DESC_MAIN_SPECIES in sp[constants.ORG_PARAM_DESC].keys() and
                                                            sp[constants.ORG_PARAM_DESC][constants.ORG_PARAM_DESC_MAIN_SPECIES] == True ):
+            sp_picture_dict[gspecies] = "" # default value
             if constants.ORG_PARAM_DESC_PICTURE_PATH in sp[constants.ORG_PARAM_DESC].keys() and \
                     sp[constants.ORG_PARAM_DESC][constants.ORG_PARAM_DESC_PICTURE_PATH] != "":
                 sp_picture_dict[gspecies] = sp[constants.ORG_PARAM_DESC][constants.ORG_PARAM_DESC_PICTURE_PATH]