Finish migrating to Normalize 2:

* Port print styles from reset.less to scaffolding.less
* Port responsive image styles from reset.less to scaffolding.less

docs/assets/css/bootstrap.css

@@ -228,6 +228,19 @@ a:hover {
   text-decoration: underline;
 }
 
+a:focus {
+  outline: thin dotted #333;
+  outline: 5px auto -webkit-focus-ring-color;
+  outline-offset: -2px;
+}
+
+img {
+  width: auto\9;
+  height: auto;
+  max-width: 100%;
+  vertical-align: middle;
+}
+
 .img-rounded {
   border-radius: 6px;
 }
@@ -245,6 +258,58 @@ a:hover {
   border-radius: 500px;
 }
 
+@media print {
+  * {
+    color: #000 !important;
+    text-shadow: none !important;
+    background: transparent !important;
+    box-shadow: none !important;
+  }
+  a,
+  a:visited {
+    text-decoration: underline;
+  }
+  a[href]:after {
+    content: " (" attr(href) ")";
+  }
+  abbr[title]:after {
+    content: " (" attr(title) ")";
+  }
+  .ir a:after,
+  a[href^="javascript:"]:after,
+  a[href^="#"]:after {
+    content: "";
+  }
+  pre,
+  blockquote {
+    border: 1px solid #999;
+    page-break-inside: avoid;
+  }
+  thead {
+    display: table-header-group;
+  }
+  tr,
+  img {
+    page-break-inside: avoid;
+  }
+  img {
+    max-width: 100% !important;
+  }
+  @page  {
+    margin: 0.5cm;
+  }
+  p,
+  h2,
+  h3 {
+    orphans: 3;
+    widows: 3;
+  }
+  h2,
+  h3 {
+    page-break-after: avoid;
+  }
+}
+
 .container {
   max-width: 940px;
   margin-right: auto;