use new filter icon.

frontend/app/card/components/CardFilters.react.js

@@ -39,7 +39,7 @@ export default class CardFilters extends Component {
             <div className="p2">
                 <div className="text-dark-grey clearfix pt2">
                     <Icon className="float-left" name={'filter'} width={36} height={36}></Icon>
-                    <div className="Sidebar-header">Filter saved questions</div>
+                    <div className="pl2 Sidebar-header">Filter saved questions</div>
                 </div>
                 <div className="rounded bg-white" style={{border: '1px solid #E5E5E5'}}>
                     <ul className="cursor-pointer">