Fixed mobile search focus - keyboard collapse/focus (#5766)

webapp/components/suggestion/suggestion_box.jsx

@@ -25,6 +25,7 @@ export default class SuggestionBox extends React.Component {
         this.handleCompositionEnd = this.handleCompositionEnd.bind(this);
         this.handleKeyDown = this.handleKeyDown.bind(this);
         this.handlePretextChanged = this.handlePretextChanged.bind(this);
+        this.blur = this.blur.bind(this);
 
         this.suggestionId = Utils.generateId();
         SuggestionStore.registerSuggestionBox(this.suggestionId);
@@ -189,6 +190,10 @@ export default class SuggestionBox extends React.Component {
         }
     }
 
+    blur() {
+        this.refs.textbox.blur();
+    }
+
     render() {
         const {
             type,