workspaceSchema inherit from workspace digest

tracim/views/core_api/schemas.py

     icon = marshmallow.fields.String()
 
 
-class WorkspaceSchema(marshmallow.Schema):
+class WorkspaceDigestSchema(marshmallow.Schema):
     id = marshmallow.fields.Int()
-    slug = marshmallow.fields.String()
     label = marshmallow.fields.String()
-    description = marshmallow.fields.String()
     sidebar_entries = marshmallow.fields.Nested(
         WorkspaceMenuEntrySchema,
         many=True,
     )
 
 
-class WorkspaceDigestSchema(marshmallow.Schema):
-    id = marshmallow.fields.Int()
-    label = marshmallow.fields.String()
-    sidebar_entries = marshmallow.fields.Nested(
-        WorkspaceMenuEntrySchema,
-        many=True,
-    )
+class WorkspaceSchema(WorkspaceDigestSchema):
+    slug = marshmallow.fields.String()
+    description = marshmallow.fields.String()
 
 
 class WorkspaceMemberSchema(marshmallow.Schema):