ungroup button on dashboard

fix a few instanced of button toolbar that were not with the right class or not in btn groups.

IPython/html/static/style/style.min.css

@@ -5613,7 +5613,9 b' button.close {'
 .panel-body:before,
 .panel-body:after,
 .modal-footer:before,
-.modal-footer:after {
+.modal-footer:after,
+.item_buttons:before,
+.item_buttons:after {
   content: " ";
   display: table;
 }
@@ -5630,7 +5632,8 b' button.close {'
 .navbar-collapse:after,
 .pager:after,
 .panel-body:after,
-.modal-footer:after {
+.modal-footer:after,
+.item_buttons:after {
   clear: both;
 }
 .center-block {
@@ -8029,10 +8032,20 b' ul.breadcrumb span {'
 }
 .item_buttons {
   line-height: 1em;
+  margin-left: -5px;
 }
 .item_buttons .btn {
   min-width: 13ex;
 }
+.item_buttons .btn-group,
+.item_buttons .input-group {
+  float: left;
+}
+.item_buttons > .btn,
+.item_buttons > .btn-group,
+.item_buttons > .input-group {
+  margin-left: 5px;
+}
 .toolbar_info {
   height: 24px;
   line-height: 24px;

IPython/html/static/tree/js/notebooklist.js

@@ -227,7 +227,7 b' define(['
                 $("<span/>").addClass("item_name")
             )
         ).append(
-            $('<div/>').addClass("item_buttons btn-group pull-right")
+            $('<div/>').addClass("item_buttons  pull-right")
         ));
         
         if (index === -1) {

IPython/html/static/tree/less/tree.less

@@ -106,6 +106,7 b' ul.breadcrumb {'
     .btn {
         min-width: 13ex;
     }
+    .btn-toolbar();
 }
 
 .toolbar_info {

IPython/html/templates/tree.html

@@ -42,7 +42,7 b' data-terminals-available="{{terminals_available}}"'
                 </span>
                 </span>
               </form>
-              <div id="notebook_buttons" class="pull-right">
+              <div id="notebook_buttons" class="pull-right btn-toolbar">
                 <div id="new-notebook-buttons" class="btn-group">
                   <button id="new_notebook" class="btn btn-default btn-xs">
                   New Notebook
@@ -53,10 +53,12 b' data-terminals-available="{{terminals_available}}"'
                   </button>
                   <ul id="new-notebook-menu" class="dropdown-menu"></ul>
                 </div>
+                <div class="btn-group">
                 <button id="refresh_notebook_list" title="Refresh notebook list" class="btn btn-default btn-xs"><i class="fa fa-refresh"></i></button>
               </div>
             </div>
           </div>
+          </div>
           <div id="notebook_list">
             <div id="notebook_list_header" class="row list_header">
               <div id="project_name">