12.0 remove font awesome (#6257)

* remove font-awesome

* remove font awesome 3.2.1

frontend/src/components/common/common-add-tool.js

@@ -6,7 +6,7 @@ function CommonAddTool(props) {
   const { callBack, footerName, className, addIconClassName } = props;
   return (
     <div className={`add-item-btn ${className ? className : ''}`} onClick={(e) => {callBack(e);}}>
-      <span className={`fas fa-plus mr-2 ${addIconClassName || ''}`}></span>
+      <span className={`sf3-font sf3-font-enlarge mr-2 ${addIconClassName || ''}`}></span>
       <span className='add-new-option' title={footerName}>{footerName}</span>
     </div>
   );

frontend/src/components/common/go-back/index.js

@@ -12,7 +12,7 @@ class GoBack extends Component {
   render() {
     return (
       <div className="go-back" onClick={this.onBackClick}>
-        <span className="fas fa-chevron-left"></span>
+        <span className="sf3-font sf3-font-down rotate-90 d-inline-block"></span>
       </div>
     );
   }