Log Message:
Update contao33 package to 3.3.1.
Though there is no description in CHANGELOG.md, data for an example web site
(Music Academy) was removed from the distribution.

Version 3.3.1 (2014-05-30)
--------------------------

### Fixed
Grant access to static files inside the `vendor` folder.

### Fixed
Do not make the `FormRadioButton` options an array (see #7060).

### Fixed
Support adding ACE and TinyMCE in subpalettes (see #7056).

### Fixed
Only use the DropZone uploader where Ajax uploads can be processed (see #7046).

### Fixed
Make the viewport field 255 characters long (see #7050).

### Fixed
Restore the "submit_container" class in the `FormSubmit` widget (see \ 
#7055).

### Fixed
Correctly generate the CSS classes of the `FormSelectMenu` widget (see #7045).

### Fixed
Use a more precise UUID detection in the `FilesModel` class (see #7054).

### Fixed
Use `pack()` instead of `hex2bin()` to be compatible with PHP 5.3 (see #7010).