title: Why edited and new locales doesn't work in wordpress plugin?
body: <p>Hello and thank you for your time.</p>
  <p>I'm editing plugin for one plugin, that add additional js-code on Wordpress pages.</p>
  <p>Precondition with plugin</p>
  <p>I have file in plugin signup.php with key, i'm try to translate</p>
  <pre><code>_e( 'Already have an account? &lt;span id=&quot;link&quot; class=&quot;ultra-redirect&quot;&gt;Log in&lt;/span&gt;', 'ultrachat' )
  </code></pre>
  <ol start="2">
  <li>I have wordpress/trunk/languages/ultrachat-tr_TR.po file with</li>
  </ol>
  <pre><code>msgid &quot;Already have an account? &lt;span id=\&quot;link\&quot; class=\&quot;ultra-redirect\&quot;&gt;Log in&lt;/span&gt;&quot;
  msgstr &quot;some translated text in Turkish&quot;
  </code></pre>
  <ol start="3">
  <li>I install plugin with Turkish version and everything translated</li>
  </ol>
  <hr />
  <p>I should change key and change translation. So i did changes.</p>
  <ol>
  <li>Change ultra-redirect to ultrachat-redirect in signup.php</li>
  </ol>
  <pre><code>_e( 'Already have an account? &lt;span id=&quot;link&quot; class=&quot;ultrachat-redirect&quot;&gt;Log in&lt;/span&gt;', 'ultrachat' )
  </code></pre>
  <ol start="2">
  <li>Change ultra-redirect to ultrachat-redirect in ultrachat-tr_TR.po</li>
  </ol>
  <pre><code>msgid &quot;Already have an account? &lt;span id=\&quot;link\&quot; class=\&quot;ultrachat-redirect\&quot;&gt;Log in&lt;/span&gt;&quot;
  msgstr &quot;sone new text&quot;
  </code></pre>
  <ol start="3">
  <li><p>I'm using Poedit to create new ultrachat-tr_TR.mo files from new ultrachat-tr_TR.po</p>
  </li>
  <li><p>I install plugin on Turkish version and every translation works from ultrachat-tr_TR.mo, except my edited one.</p>
  </li>
  </ol>
  <p>__</p>
  <p>Do you know any ideas, what can be wrong?</p>