Updated highcharts and added support for CSV export. Also tweaked the look of the highcharts context menu separators.

 - Legacy-Id: 15770

Author: levkowetz

ietf/bower.json

@@ -7,7 +7,7 @@
     "bootstrap-datepicker": "~1",
     "d3": "~3",
     "font-awesome": "~4",
-    "highcharts": "~4",
+    "highcharts": "~6",
     "html5shiv": "~3",
     "jquery": "~1",
     "jquery.cookie": "~1",
@@ -51,6 +51,7 @@
 	  "highstock.js",
 	  "highmaps.js",
 	  "modules/exporting.js",
+	  "modules/export-data.js",
 	  "modules/offline-exporting.js",
 	  "modules/map.js"
 	]

ietf/externals/static/highcharts/bower.json

@@ -1,9 +1,6 @@
 {
   "name": "highcharts",
-  "version": "v4.2.7",
-  "main": [
-    "highcharts.js",
-    "highcharts-more.js",
-    "modules/exporting.js"
-  ]
+  "version": "6.2.0",
+  "main": "highcharts.js",
+  "license": "https://www.highcharts.com/license"
 }