Fix: Add context search for source and target ports timeline sections (Redmine issue: #7614)

lib/hawat/blueprints/design_bs3/templates/_macros_chart.html

@@ -936,14 +936,14 @@
             _('Number of events per source port'),
             _('This view shows total numbers of IDEA events aggregated according to a <em>source port</em>. Because an event may contain multiple <em>source ports</em>, the total numbers in these charts may differ from the total number of events displayed in the table above.'),
             'multi',
-            None
+            'ports'
         ),
         (
             'target_ports',
             _('Number of events per target port'),
             _('This view shows total numbers of IDEA events aggregated according to a <em>target port</em>. Because an event may contain multiple <em>target ports</em>, the total numbers in these charts may differ from the total number of events displayed in the table above.'),
             'multi',
-            None
+            'ports'
         ),
         (
             'protocols',