give all docs callouts IDs

[skip sauce]

docs/_includes/components/navs.html

@@ -3,12 +3,12 @@
 
   <p class="lead">Navs available in Bootstrap have shared markup, starting with the base <code>.nav</code> class, as well as shared states. Swap modifier classes to switch between each style.</p>
 
-  <div class="bs-callout bs-callout-info">
+  <div class="bs-callout bs-callout-info" id="callout-navs-tabs-plugin">
     <h4>Using navs for tab panels requires JavaScript tabs plugin</h4>
     <p>For tabs with tabbable areas, you must use the <a href="../javascript/#tabs">tabs JavaScript plugin</a>. The markup will also require additional <code>role</code> and ARIA attributes – see the plugin's <a href="../javascript/#tabs-usage">example markup</a> for further details.</p>
   </div>
 
-  <div class="bs-callout bs-callout-warning">
+  <div class="bs-callout bs-callout-warning" id="callout-navs-accessibility">
     <h4>Make navs used as navigation accessible</h4>
     <p>If you are using navs to provide a navigation bar, be sure to add a <code>role="navigation"</code> to the most logical parent container of the <code>&lt;ul&gt;</code>, or wrap a <code>&lt;nav&gt;</code> element around the whole navigation. Do not add the role to the <code>&lt;ul&gt;</code> itself, as this would prevent it from being announced as an actual list by assistive technologies.</p>
   </div>
@@ -65,7 +65,7 @@
   <h2 id="nav-justified">Justified</h2>
   <p>Easily make tabs or pills equal widths of their parent at screens wider than 768px with <code>.nav-justified</code>. On smaller screens, the nav links are stacked.</p>
   <p><strong class="text-danger">Justified navbar nav links are currently not supported.</strong></p>
-  <div class="bs-callout bs-callout-warning">
+  <div class="bs-callout bs-callout-warning" id="callout-navs-justified-safari">
     <h4>Safari and responsive justified navs</h4>
     <p>As of v8.0, Safari exhibits a bug in which resizing your browser horizontally causes rendering errors in the justified nav that are cleared upon refreshing. This bug is also shown in the <a href="../examples/justified-nav/">justified nav example</a>.</p>
   </div>
@@ -95,7 +95,7 @@
   <h2 id="nav-disabled-links">Disabled links</h2>
   <p>For any nav component (tabs or pills), add <code>.disabled</code> for <strong>gray links and no hover effects</strong>.</p>
 
-  <div class="bs-callout bs-callout-warning">
+  <div class="bs-callout bs-callout-warning" id="callout-navs-anchor-disabled">
     <h4>Link functionality not impacted</h4>
     <p>This class will only change the <code>&lt;a&gt;</code>'s appearance, not its functionality. Use custom JavaScript to disable links here.</p>
   </div>