error-pages: update message to more proper.

rhodecode/config/middleware.py

@@ -165,7 +165,7 b' def error_handler(exception, request):'
 
     error_explanation = base_response.explanation or str(base_response)
     if base_response.status_code == 404:
-        error_explanation += " Or you don't have permission to access it."
+        error_explanation += " Optionally you don't have permission to access this page."
     c = AttributeDict()
     c.error_message = base_response.status
     c.error_explanation = error_explanation