Allow direct print of the notebook.

this improve the current css of the print page and add css to the
classical notebook with print as target to get a better print view ant
the ability to directly print a notebook without going through the print
view

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

@@ -2,4 +2,6 body { overflow: visible !important; }
 div#notebook { overflow: visible !important; }
 .ui-widget-content { border: 0px; }
 #save_widget {margin: 0px !important;}
-#header {display: none !important;}
+#header,#pager,#pager_splitter,#menubar,#toolbar {display: none !important;}
+.cell { border:none !important}
+

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

@@ -19,6 +19,8 window.mathjax_url = "{{mathjax_url}}";
 <link rel="stylesheet" href="{{ static_url("css/tooltip.css") }}" type="text/css" />
 <link rel="stylesheet" href="{{ static_url("css/renderedhtml.css") }}" type="text/css" />
 
+<link rel="stylesheet" href="{{ static_url("css/printnotebook.css") }}" type="text/css" media="print"/>
+
 {% end %}