Log Message:
Update contao31 to 3.1.1.

Albanian language files are added and Spanish language files are re-added.

Version 3.1.1 (2013-06-25)
--------------------------

### Fixed
Append the query string when forwarding (see #5867).

### Fixed
Decouple the file/page picker breadcrumb from the file/page manager (see #5899).

### Fixed
Also show the mandatory star in password confirmation fields (see #5926).

### Fixed
Only return one IP address in `Environment::get('ip')` (see #5830).

### Fixed
Explicitly check for `.php` files when scanning DCA files (see #5898).

### Fixed
Replaced all dummy `.htaccess` files with `.gitignore` files.

### Fixed
Quote wildcard characters in MySQL `LIKE` queries (see #5896).

### Fixed
Correctly align the version drop-down menu in Safari (see #5854).

### Fixed
Make sure `window.$` is mapped to MooTools (see #5892).

### Fixed
Do not add sort buttons to table row headers (see #5845).

### Fixed
Show the newsletter channels upon registration (see #5874).

### Updated
Updated ACE to version 1.1.01 (fixes #5852).

### Fixed
Correctly handle hidden pages in the custom navigation module (see #5832).

### Fixed
Support FAQs with images on the FAQ page (see #5810).

### Fixed
Support using commas in folder names in the file selector (see #5823).

### Fixed
Ignore the `auto_item` parameter when forwarding internally (see #5886).

### Fixed
Added support for old IE versions to swipe.js (see #5862).

### Fixed
Correctly bypass the cache if `bypassCache` is set (see #5872).

### Fixed
Preserve the CSS3PIE behavior file path when combining style sheets (see #5848).

### Fixed
Support all known template types in the autoload creator (see #5857).

### Fixed
Correctly adjust the accordion elements to the new DB structure (see #5820).

### Fixed
Added `E_USER_DEPRECATED` to the list of error constants (see #5839).