title: Joomla 3 $params->get returns NULL values in module
body: <p>I am writing a new module for Joomla! 3 and I am stumped by $params->get.</p>
  
  <p>I can see the values in the database within the modules table, but the following code returns nothing for every parameter that have been set, including the default parameters of module_tag, bootstrap_size, header_tag, header_class, style.</p>
  
  <p>The code is:</p>
  
  <pre><code>$app = JFactory::getApplication();
  $params = $app-&gt;getParams();
  $param = $params-&gt;get('module_tag');
  </code></pre>
  
  <p>When looking at the type of the variable $param, the type is retuned as NULL.</p>
  
  <p>Joomla! 3.6.2<br/>
  Stable PHP 5.6.18<br/>
  MySQL 5.6.31<br/></p>