Log Message:
Update contao211 to 2.11.8, LTS release.

Version 2.11.8 (2013-01-07)
---------------------------

### Fixed
Make sure entered dates map to an existing date (see #5086).

### Fixed
Fixed the MySQLi field count (see #5182).

### Fixed
The Date class should return `00:00` for `Date(0)->time` (see #4249).

### Reverted
Handle dependencies when updating extensions (see #3804).

### Fixed
Fixed the unprefixed CSS gradient output (see #4569).

### Fixed
Fixed a small formatting issue in the Music Academy theme (see #5160).

### Fixed
Show all extensions in the log when updating multiple at once (see #5144).

### Fixed
Standardize RSS feed aliases (see #5096).

### Fixed
Make the `FileUpload` constructor public (see #5054).

### Fixed
Use `isset()` in the `Database::fetch*()` methods (see #4990).

### Fixed
Changed the `System::getReadableSize()` algorithm to powers of two (see #4283).

### Fixed
Removed Tahiti and the Netherlands Antilles from the countries list (see #3791).

### Fixed
Also adjust the `be_navigation.html5` template to the new \ 
"getUserNavigation"
hook changes (see #3411).