Sort function Download Definitions for the Generic Highlighter

Task-number: QTCREATORBUG-6978
Change-Id: I2c090f244a994878998b693872e650f153638f9a
Reviewed-by: Leandro Melo <leandro.melo@nokia.com>

src/plugins/texteditor/generichighlighter/managedefinitionsdialog.ui

@@ -40,12 +40,18 @@
         <property name="gridStyle">
          <enum>Qt::NoPen</enum>
         </property>
+        <property name="sortingEnabled">
+         <bool>true</bool>
+        </property>
         <property name="columnCount">
          <number>3</number>
         </property>
         <attribute name="horizontalHeaderHighlightSections">
          <bool>false</bool>
         </attribute>
+        <attribute name="horizontalHeaderShowSortIndicator" stdset="0">
+         <bool>true</bool>
+        </attribute>
         <attribute name="verticalHeaderVisible">
          <bool>false</bool>
         </attribute>