Make extraction of inspection errors indirect

lib/hawat/blueprints/events/templates/events/show.html

@@ -410,7 +410,7 @@
                             {%- endif %}
 
                             {%- if permission_can('power') %}
-                                {%- set tmpval = item.get_jpath_values('_CESNET.InspectionErrors') %}
+                                {%- set tmpval = item.get_inspection_errors() %}
                                 {%- if tmpval %}
                             <hr>
                             <h4>{{ _('Inspection errors') }} {{ get_icon('role-admin') }}</h4>

lib/mentat/idea/internal.py

@@ -356,6 +356,15 @@ class Idea(idea.lite.Idea):  # pylint: disable=locally-disabled,too-many-ancesto
             self.get('_CESNET', {}).get('SourceResolvedASN', [])
         )
 
+    def get_inspection_errors(self):
+        """
+        Convenience method for returning a list of inspection errors.
+
+        :return: List of values of ``idea['_CESNET']['InspectionErrors']``.
+        :rtype: list
+        """
+        return self.get_jpath_values('_CESNET.InspectionErrors')
+
     def get_jpath_value(self, jpath):
         """
         Return single (first in case o a list) value on given JPath within the