Restore kernel status to header

IPython/frontend/html/notebook/static/css/notebook.css

@@ -37,14 +37,16 input#notebook_name {
 }
 
 span#kernel_status {
-    float: right;
-    padding: 0px 5px;
+    position: absolute;
+    padding: 8px 5px 5px 5px;
+    right: 10px;
     font-weight: bold;
 }
 
 
 .status_idle {
     color: gray;
+    visibility: hidden;
 }
 
 .status_busy {

IPython/frontend/html/notebook/templates/notebook.html

@@ -58,6 +58,7
     <span id="quick_help_area">
       <button id="quick_help">Quick<u>H</u>elp</button>
       </span>
+    <span id="kernel_status">Idle</span>
 </div>
 
 <div id="MathJaxFetchingWarning"
@@ -179,7 +180,6
         <div id="kernel_section">
             <div class="section_header">
                 <h3>Kernel</h3>
-                <span id="kernel_status">Idle</span>
             </div>
             <div class="section_content">
                 <div class="section_row">