tons of docs cleanup in css, adding subnav to official components

docs/templates/pages/components.mustache

@@ -4,7 +4,7 @@
   <h1>{{_i}}Components{{/i}}</h1>
   <p class="lead">{{_i}}Dozens of reusable components are built into Bootstrap to provide navigation, alerts, popovers, and much more.{{/i}}</p>
   <div class="subnav">
-    <ul class="nav nav-pills">
+    <ul class="nav">
       <li><a href="#dropdowns">{{_i}}Dropdowns{{/i}}</a></li>
       <li class="dropdown">
         <a class="dropdown-toggle" data-toggle="dropdown" href="#">{{_i}}Buttons{{/i}} <b class="caret"></b></a>