Add measure description

Author: phylor

lib/ioki/model/operator/reporting/report_aggregation_measure.rb

@@ -17,6 +17,10 @@ class ReportAggregationMeasure < Base
                     on:   :read,
                     type: :string
 
+          attribute :localized_description,
+                    on:   :read,
+                    type: :string
+
           attribute :function,
                     on:   :read,
                     type: :string

lib/ioki/model/operator/reporting/report_aggregation_measure_series.rb

@@ -17,6 +17,10 @@ class ReportAggregationMeasureSeries < Base
                     on:   :read,
                     type: :string
 
+          attribute :localized_measure_description,
+                    on:   :read,
+                    type: :string
+
           attribute :dimension_name,
                     on:   :read,
                     type: :string