add panel on enter

public/app/features/dashboard/dashgrid/AddPanelPanel.tsx

@@ -154,6 +154,15 @@ export class AddPanelPanel extends React.Component<AddPanelPanelProps, AddPanelP
     });
   }
 
+  filterKeyPress(evt) {
+    if (evt.key === 'Enter') {
+      let panel = _.head(this.state.panelPlugins);
+      if (panel) {
+        this.onAddPanel(panel);
+      }
+    }
+  }
+
   filterPanels(panels, filter) {
     let regex = new RegExp(filter, 'i');
     return panels.filter(panel => {
@@ -234,6 +243,7 @@ export class AddPanelPanel extends React.Component<AddPanelPanelProps, AddPanelP
                   placeholder="Panel Search Filter"
                   value={this.state.filter}
                   onChange={this.filterChange.bind(this)}
+                  onKeyPress={this.filterKeyPress.bind(this)}
                 />
                 <i className="gf-form-input-icon fa fa-search" />
               </label>