Make environment overrided setting message more clear.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

mayan/apps/smart_settings/apps.py

@@ -3,7 +3,6 @@ from __future__ import unicode_literals
 from django.utils.translation import ugettext_lazy as _
 
 from common import MayanAppConfig, menu_sidebar, menu_setup, menu_object
-from common.widgets import TwoStateWidget
 from navigation import SourceColumn
 
 from .classes import Namespace, Setting
@@ -38,11 +37,8 @@ class SmartSettingsApp(MayanAppConfig):
             source=Setting, label=_('Value'), attribute='serialized_value'
         )
         SourceColumn(
-            source=Setting, label=_('Environment variable'),
-            func=lambda context: TwoStateWidget(
-                center=True,
-                state=context['object'].environment_variable
-            ).render()
+            source=Setting, label=_('Overrided by environment variable?'),
+            func=lambda context: _('Yes') if context['object'].environment_variable else _('No')
         )
 
         menu_object.bind_links(