small whitespace cleanup, renamed drag_info

in the dashboard, I've renamed drag_info to notebook_list_info, so
applying style to notebook_list_info and running_list_info can be done
in one place.

IPython/html/static/tree/js/kernellist.js

@@ -22,7 +22,6 b' var IPython = (function (IPython) {'
 
     KernelList.prototype.sessions_loaded = function (d) {
         this.sessions = d;
-        // clear out the previous list
         this.clear_list();
         var item;
         for (var path in d) {

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

@@ -33,10 +33,11 b' var IPython = (function (IPython) {'
     };
 
     NotebookList.prototype.style = function () {
-        $('#' + this.element_name + '_toolbar').addClass('list_toolbar');
-        $('#drag_info').addClass('toolbar_info');
-        $('#' + this.element_name + '_buttons').addClass('toolbar_buttons');
-        $('#' + this.element_name + '_list_header').addClass('list_header');
+        var prefix = '#' + this.element_name
+        $(prefix + '_toolbar').addClass('list_toolbar');
+        $(prefix + '_list_info').addClass('toolbar_info');
+        $(prefix + '_buttons').addClass('toolbar_buttons');
+        $(prefix + '_list_header').addClass('list_header');
         this.element.addClass("list_container");
     };
 

IPython/html/templates/tree.html

@@ -34,7 +34,7 b' data-base-kernel-url="{{base_kernel_url}}"'
         <div id="notebook_toolbar" class="row-fluid">
             <div class="span8">
                 <form id='alternate_upload'  class='alternate_upload' >
-                    <span id="drag_info" style="position:absolute" >
+                    <span id="notebook_list_info" style="position:absolute" >
                         To import a notebook, drag the file onto the listing below or <strong>click here</strong>.
                         </span>
                     <input type="file" name="datafile" class="fileinput" multiple='multiple'>
@@ -76,9 +76,8 b' data-base-kernel-url="{{base_kernel_url}}"'
         </div>
 
         <div id="running_list">
-            <div id="running_list_header" class="row-fluid list_header" style='display:none'> 
+            <div id="running_list_header" class="row-fluid list_header"> 
                 <div> There are no notebooks running. </div>
-            <!-- damn it, I seem to need this stupid placeholder, otherwise items don't get added to the list -->
             </div> 
         </div>
     </div>