Add on click binding also for column highcharts

Change-Id: I3204087489854eaa40ff6bbe68dc660277da6e44
diff --git a/R/hc_add_onclick_korap_search.R b/R/hc_add_onclick_korap_search.R
index bf9d68b..6140ffa 100644
--- a/R/hc_add_onclick_korap_search.R
+++ b/R/hc_add_onclick_korap_search.R
@@ -34,6 +34,9 @@
     spline = list(cursor = 'pointer', point = list(events = list(
       click = JS("function() { window.open(this.webUIRequestUrl, 'korap'); }")
     ))),
+    column = list(cursor = 'pointer', point = list(events = list(
+      click = JS("function() { window.open(this.webUIRequestUrl, 'korap'); }")
+    ))),
     line = list(cursor = 'pointer', point = list(events = list(
       click = JS("function() { window.open(this.webUIRequestUrl, 'korap'); }")
     ))))