title: Bootstrap glyphicons appearing on the next line instead of at the end of an input element
body: <p>I'm trying to get glyphicons to appear at the end of my inputs, yet they always appear on the next line. </p>
  
  <pre><code>    &lt;div class="form-group" id="section_blocks"&gt;
          &lt;label class="control-label col-lg-3" for="id_blockdisplay"&gt;Select Element&lt;/label&gt;
          &lt;div class="col-lg-9"&gt;
              &lt;input class="form-control" id="id_elementdisplay" placeholder="Element" type="text" value="Element"&gt;
              &lt;span class="input-group-addon glyphicon glyphicon-list"&gt;&lt;/span&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  </code></pre>
  
  <p>As far as I am aware (only just got into bootstrap), you use span classes for glyphicons and in this case, it should appear on the end like a little button.</p>
  
  <p>The same thing happens when I try to use icons for things like validating input elements. If I try add a glyphicon at the end (not with the button style this time), the span element appears on a new line along with the glyphicon.</p>
  
  <p>Any help on this would be very much appreciated!</p>