Alembic: a ReplaceableObject can be designated by its name

gargantext/util/alembic.py

@@ -29,6 +29,8 @@ class ReversibleOp(MigrateOperation):
 
     @classmethod
     def invoke_for_target(cls, operations, target):
+        if isinstance(target, str):
+            target = cls._get_object_from_version(operations, target)
         op = cls(target)
         return operations.invoke(op)