Merge branch '2.2.2-wip' into exploratory

Conflicts:
	docs/assets/css/bootstrap.css
	docs/scaffolding.html
	docs/templates/pages/scaffolding.mustache

docs/assets/css/bootstrap.css

@@ -128,6 +128,58 @@ textarea {
   vertical-align: top;
 }
 
+@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;
+  }
+}
+
 body {
   margin: 0;
   font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
@@ -4561,6 +4613,7 @@ input[type="button"].btn-block {
   display: none;
   width: 236px;
   padding: 1px;
+  white-space: normal;
   background-color: #ffffff;
   border: 1px solid #ccc;
   border: 1px solid rgba(0, 0, 0, 0.2);
@@ -4776,6 +4829,11 @@ a.thumbnail:hover {
   border-radius: 9px;
 }
 
+.label:empty,
+.badge:empty {
+  display: none;
+}
+
 a.label:hover,
 a.badge:hover {
   color: #ffffff;