fix(ui): show checked on multidropdown (#11711)

CHANGELOG.md

@@ -11,6 +11,7 @@
 1. [11683](https://github.com/influxdata/influxdb/pull/11683): Change the wording for the plugin config form button to Done
 1. [11689](https://github.com/influxdata/influxdb/pull/11689): Change the wording for the Collectors configure step button to Create and Verify
 1. [11697](https://github.com/influxdata/influxdb/pull/11697): Standardize page loading spinner styles
+1. [11711](https://github.com/influxdata/influxdb/pull/11711): Show checkbox on Save As button in data explorer
 
 ## v2.0.0-alpha.1 [2019-01-23]
 

ui/src/clockface/components/dropdowns/Dropdown.scss

@@ -130,6 +130,10 @@
     opacity: 1;
     transform: translate(-50%,-50%) scale(1,1);
   }
+
+  .checked &:after {
+    opacity: 1;
+  }
 }
 
 /* Themes */

ui/src/dataExplorer/components/DashboardsDropdown.tsx

@@ -58,7 +58,9 @@ class DashboardsDropdown extends PureComponent<Props> {
   }
 
   private get dividerItem(): JSX.Element {
-    return <MultiSelectDropdown.Divider key={0} />
+    return (
+      <MultiSelectDropdown.Divider id="divider" key="existing-dashboards" />
+    )
   }
 }
 export default DashboardsDropdown