rename error schema

tracim/__init__.py

 from tracim.lib.utils.authorization import TRACIM_DEFAULT_PERM
 from tracim.views.core_api.session_controller import SessionController
 from tracim.views.default.default_controller import DefaultController
-from tracim.views.errors import Error
+from tracim.views.errors import ErrorSchema
 
 
 def main(global_config, **settings):
     hapic.set_context(
         PyramidContext(
             configurator=configurator,
-            default_error_builder=Error()
+            default_error_builder=ErrorSchema()
         )
     )
     # Add controllers

tracim/views/default/default_controller.py

 from tracim import TracimRequest
 from tracim.extensions import hapic
 from tracim.views.controllers import Controller
-from tracim.views.errors import Error
+from tracim.views.errors import ErrorSchema
 from pyramid.config import Configurator
 
 

tracim/views/errors.py

 from hapic.error import DefaultErrorBuilder
 
 
-class Error(DefaultErrorBuilder):
+class ErrorSchema(DefaultErrorBuilder):
+    """
+    This class is both a builder and a Marshmallow Schema, His named is used for
+    swagger ui error schema. That's why we call it ErrorSchema To have
+    a nice naming in swagger ui.
+    """
     pass