Show Searchbar clear button only when text is entered

client/modules/IDE/components/Searchbar.jsx

@@ -46,7 +46,7 @@ class Searchbar extends React.Component {
   render() {
     const { searchValue } = this.state;
     return (
-      <div className="searchbar">
+      <div className={`searchbar ${searchValue === '' ? 'searchbar--is-empty' : ''}`}>
         <button
           type="submit"
           className="searchbar__button"

client/styles/components/_searchbar.scss

@@ -68,3 +68,7 @@ button[type="submit"].searchbar__button {
     }
   }
 }
+
+.searchbar--is-empty .searchbar__clear-button {
+  display: none;
+}