Log Message:
Update contao44 to 4.4.1.

### 4.4.1 (2017-07-12)

 * Prevent arbitrary PHP file inclusions in the back end (see CVE-2017-10993).
 * Correctly handle subpalettes in "edit multiple" mode (see #946).
 * Correctly show the DCA picker in the site structure (see #906).
 * Correctly update the style sheets if a format definition is
   enabled/disabled (see #893).
 * Always show the "show from" and "show until" fields (see \ 
#908).
 * Correctly set the "overwriteMeta" field during the database update (see
   contao/core-bundle#888).