Dashboard refactory (#3581)

Create Chart component for all chart fetching and rendering, and apply redux architecture in dashboard view.

superset/assets/javascripts/modules/utils.js

@@ -240,3 +240,11 @@ export function tryNumify(s) {
   }
   return n;
 }
+
+export function getParam(name) {
+  /* eslint no-useless-escape: 0 */
+  const formattedName = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
+  const regex = new RegExp('[\\?&]' + formattedName + '=([^&#]*)');
+  const results = regex.exec(location.search);
+  return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
+}