Give all embedded live docs examples data-example-id attrs

Refs #11410

docs/_includes/components/navs.html

@@ -15,7 +15,7 @@
 
   <h2 id="nav-tabs">Tabs</h2>
   <p>Note the <code>.nav-tabs</code> class requires the <code>.nav</code> base class.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-tabs">
     <ul class="nav nav-tabs">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -33,7 +33,7 @@
 
   <h2 id="nav-pills">Pills</h2>
   <p>Take that same HTML, but use <code>.nav-pills</code> instead:</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-pills">
     <ul class="nav nav-pills">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -48,7 +48,7 @@
 </ul>
 {% endhighlight %}
   <p>Pills are also vertically stackable. Just add <code>.nav-stacked</code>.</p>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-stacked">
     <ul class="nav nav-pills nav-stacked" style="max-width: 300px;">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -69,7 +69,7 @@
     <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>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="simple-nav-justified">
     <ul class="nav nav-tabs nav-justified">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Profile</a></li>
@@ -100,7 +100,7 @@
     <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>
 
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="disabled-nav-link">
     <ul class="nav nav-pills">
       <li role="presentation"><a href="#">Clickable link</a></li>
       <li role="presentation"><a href="#">Clickable link</a></li>
@@ -120,7 +120,7 @@
   <p>Add dropdown menus with a little extra HTML and the <a href="../javascript/#dropdowns">dropdowns JavaScript plugin</a>.</p>
 
   <h3>Tabs with dropdowns</h3>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="nav-tabs-with-dropdown">
     <ul class="nav nav-tabs">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Help</a></li>
@@ -154,7 +154,7 @@
 {% endhighlight %}
 
   <h3>Pills with dropdowns</h3>
-  <div class="bs-example">
+  <div class="bs-example" data-example-id="nav-pills-with-dropdown">
     <ul class="nav nav-pills">
       <li role="presentation" class="active"><a href="#">Home</a></li>
       <li role="presentation"><a href="#">Help</a></li>