[Frontend] WIP Style Guide

Fixes #1233
Adds to text inputs content;
Mods to MCTExample to allow a padded
wrapper around <pre> element;
Fixed snow theme css file reference;

example/styleguide/res/templates/mct-example.html

@@ -1,6 +1,8 @@
 <div class="col">
-   <h3>Markup</h3>
-   <pre><code></code></pre>
-   <h3>Example</h3>
-   <div></div>
+    <h3>Markup</h3>
+    <span class="w-markup">
+        <pre></pre>
+    </span>
+    <h3>Example</h3>
+    <div></div>
 </div>