Fix display of notebook

by limiting the padding-right to only the toolbar

src/sao.less

@@ -1,10 +1,9 @@
-.navbar {
-    margin-bottom: 1px;
-}
-
 .tab-form {
-    & .nav > li > a {
-        padding-right: 5px;
+    & .toolbar {
+        margin-bottom: 1px;
+        & ul.nav > li > a {
+            padding-right: 0px;
+        }
     }
 }
 

src/tab.js

@@ -38,7 +38,7 @@
         },
         create_toolbar: function() {
             var toolbar = jQuery(
-                    '<nav class="navbar navbar-default" role="navigation">' +
+                    '<nav class="navbar navbar-default toolbar" role="navigation">' +
                     '<div class="container-fluid">' +
                     '<div class="navbar-header">' +
                     '<button type="button" class="navbar-toggle collapsed" ' +