Optimizing the standalone view

The standalone view doesn't need to fetch the datasources asynchronously
to fill in the dataources dropdown, it also doesn't need to render any
of the controls.

superset/assets/javascripts/explorev2/components/ExploreViewContainer.jsx

@@ -32,8 +32,11 @@ class ExploreViewContainer extends React.Component {
   }
 
   componentDidMount() {
-    this.props.actions.fetchDatasources();
+    if (!this.props.standalone) {
+      this.props.actions.fetchDatasources();
+    }
     window.addEventListener('resize', this.handleResize.bind(this));
+    this.triggerQueryIfNeeded();
   }
 
   componentWillReceiveProps(np) {
@@ -47,9 +50,7 @@ class ExploreViewContainer extends React.Component {
   }
 
   componentDidUpdate() {
-    if (this.props.triggerQuery && !this.hasErrors()) {
-      this.runQuery();
-    }
+    this.triggerQueryIfNeeded();
   }
 
   componentWillUnmount() {
@@ -61,7 +62,8 @@ class ExploreViewContainer extends React.Component {
     this.props.actions.removeControlPanelAlert();
     this.props.actions.removeChartAlert();
 
-    this.runQuery();
+    this.props.actions.triggerQuery();
+
     history.pushState(
       {},
       document.title,
@@ -81,8 +83,10 @@ class ExploreViewContainer extends React.Component {
   }
 
 
-  runQuery() {
-    this.props.actions.runQuery(this.props.form_data);
+  triggerQueryIfNeeded() {
+    if (this.props.triggerQuery && !this.hasErrors()) {
+      this.props.actions.runQuery(this.props.form_data);
+    }
   }
 
   handleResize() {