improved structure and organization between video and training docs on the Training landing page.

@jd:body

<p>Welcome to Training for Android developers. Here you'll find sets of lessons within classes

that describe how to accomplish a specific task with code samples you can re-use in your app.

Classes are organized into several groups you can see at the top-level of the left navigation.</p>

 <p>This first group, <em>Getting Started</em>, teaches you the bare

    essentials for Android app development. If you're a new Android app developer, you should

    complete each of these classes in order.</p>

<div class="wrap">

  <div class="cols">

    <div class="col-1of2">

      <p>If you prefer to learn through interactive video training,

      check out this trailer for a course about the fundamentals of Android development.</p>

      <p><a href="https://www.udacity.com/course/ud853" class="button">

        Start the video course</a>

      </p>

<p>Welcome to Training for Android developers. Here you'll find

training classes that describe how to accomplish a specific task with code

samples you can re-use in your app. Classes are organized into several groups

you can see at the top-level of the left navigation.</p>

<p>The first <a href="#class-list">training guides below</a>

teach you the essentials for Android app development. If you're a new

Android app developer, you should complete each of these classes in order.</p>

<p>Various online video courses are also available if you'd prefer

an interactive video experience.</p>

    </div>

    <div class="col-1of2">

      <iframe width="300" height="169" src="//www.youtube.com/embed/LfVBFFoy9Y0?utm_source=dac&utm_medium=video&utm_content=andfuntrain&utm_campaign=udacint?rel=0&amp;hd=1" frameborder="0" allowfullscreen></iframe>

    <div class="col-1of2" style="background:#eee;padding-top:10px">

      <p>Check out this trailer for a course about the fundamentals of

        Android development on Udacity.</p>

      </p>

      <iframe width="338" height="169" src="//www.youtube.com/embed/LfVBFFoy9Y0?utm_source=dac&utm_medium=video&utm_content=andfuntrain&utm_campaign=udacint?rel=0&amp;hd=1" frameborder="0" allowfullscreen></iframe>

      <p><a href="https://www.udacity.com/course/ud853" class="button"

        style="width:100%">Start the video course</a>

    </div>

  </div>

</div>

<div style="clear:left" id="classes"></div>

<section class="dac-section dac-small" id="latest-games"><div class="wrap">

  <h2 class="norule">Online video courses</h2>

  <p>If you prefer to learn through interactive video training,

    check out these free courses.</p>

  <h2 class="norule" style="margin:20px 0">Online video courses</h2>

  <div class="resource-widget resource-flow-layout col-16"

       data-query="collection:develop/landing/courses"

       data-sortOrder="random"

       data-initial-results="6"></div>

  </div>

</section>

<h2 class="norule" id="class-list"

  style="margin:0 0 -40px">Training guides</h2>

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