DB: Some fixes for db update 0.1.0.

src/Model/HydraulicStructures/Basic/HydraulicStructures.py

@@ -75,6 +75,7 @@ class BasicHS(SQLSubModel):
         if major == minor == "0":
             if int(release) < 6:
                 cls._db_create(execute)
+                return True
             else:
                 cls._db_update_to_0_1_0(execute, data)