Add new styles classes to sidebar

src/styles/sidebar/common.scss

@@ -260,6 +260,10 @@ html {
   min-width: 120px;
 }
 
+.dropdown-menu__row--no-border{
+  border: none;
+}
+
 .dropdown-menu__row--unpadded {
   padding-left: 0px;
   padding-right: 0px;

src/styles/sidebar/sidebar.scss

@@ -15,6 +15,9 @@ $base-line-height: 20px;
 @import './components/dropdown-menu-btn';
 @import './components/excerpt';
 @import './components/group-list';
+@import './components/group-list-item';
+@import './components/group-list-item-out-of-scope';
+@import './components/group-list-section';
 @import './components/help-panel';
 @import './components/loggedout-message';
 @import './components/login-control';