title: Redmine create issue with REST API
body: <p>I am trying to create an issue in Redmine (V 2.3.4) via RESTful. I've read the documentation and tried the example which didn't work (HTTP-Code: 404).</p>
  
  <pre><code>POST http://easyredmine.digitronic.com/issues.xml
  &lt;?xml version="1.0"?&gt;
  &lt;issue&gt;
      &lt;project_id&gt;1&lt;/project_id&gt;
      &lt;subject&gt;Example&lt;/subject&gt;
      &lt;priority_id&gt;4&lt;/priority_id&gt;
  &lt;/issue&gt;
  </code></pre>
  
  <p>Then I tried this and it worked:</p>
  
  <pre><code>POST http://easyredmine.digitronic.com/projects/isda/issues.xml
  &lt;?xml version="1.0"?&gt;
  &lt;issue&gt;
      &lt;project_id&gt;1&lt;/project_id&gt;
      &lt;subject&gt;Example&lt;/subject&gt;
      &lt;priority_id&gt;4&lt;/priority_id&gt;
  &lt;/issue&gt;
  </code></pre>
  
  <p>I am using the taskadapter Redmine API which sends requests in the first form.</p>