Cleaning up indentation and spacing of less files touched.

IPython/html/static/base/less/flexbox.less

@@ -66,8 +66,6 b''
     .box-flex1();
 }
 
-
-
 .box-flex2 {
     -webkit-box-flex: 2;
     -moz-box-flex: 2;

IPython/html/static/notebook/less/outputarea.less

@@ -140,9 +140,11 b' div.raw_input {'
   line-height: 1em;
   font-family: @monoFontFamily;
 }
+
 span.input_prompt {
   font-family: inherit;
 }
+
 input.raw_input {
   font-family: inherit;
   font-size: inherit;