Add caret to Add Token toggle

ui/app/add-token.js

@@ -350,7 +350,10 @@ AddTokenScreen.prototype.render = function () {
         h('div.add-token__footers', [
           h('div.add-token__add-custom', {
             onClick: () => this.setState({ isCollapsed: !isCollapsed }),
-          }, 'Add custom token'),
+          }, [
+            'Add custom token',
+            h(`i.fa.fa-angle-${isCollapsed ? 'down' : 'up'}`),
+          ]),
           this.renderCustomForm(),
         ]),
       ]),

ui/app/css/itcss/components/add-token.scss

@@ -109,7 +109,18 @@
     cursor: pointer;
 
     &:hover {
-      background-color: $gallery;
+      background-color: rgba(0, 0, 0, .05);
+    }
+
+    &:active {
+      background-color: rgba(0, 0, 0, .1);
+    }
+
+    .fa {
+      position: absolute;
+      right: 24px;
+      font-size: 24px;
+      line-height: 24px;
     }
   }