slug param in user_workspace

tracim/tests/functional/test_user.py

         workspace = res[0]
         assert workspace['id'] == 1
         assert workspace['label'] == 'Business'
+        assert workspace['slug'] == 'business'
         assert len(workspace['sidebar_entries']) == 7
 
         sidebar_entry = workspace['sidebar_entries'][0]

tracim/views/core_api/schemas.py

 
 class WorkspaceDigestSchema(marshmallow.Schema):
     id = marshmallow.fields.Int(example=4)
+    slug = marshmallow.fields.String(example='intranet')
     label = marshmallow.fields.String(example='Intranet')
     sidebar_entries = marshmallow.fields.Nested(
         WorkspaceMenuEntrySchema,
 
 
 class WorkspaceSchema(WorkspaceDigestSchema):
-    slug = marshmallow.fields.String(example='intranet')
     description = marshmallow.fields.String(example='All intranet data.')
 
     class Meta: