Log Message:
Update contao35 to 3.5.17.  This is a leaf package.

Version 3.5.17 (2016-09-20)
---------------------------

### Fixed
Handle special character passwords in the "close account" module (see \ 
#8455).

### Fixed
Handle broken SVG files in the Image and File class (see #8470).

### Fixed
Reduce the maximum field length by the file extension length (see #8472).

### Fixed
Fall back to the field name if there is no label (see #8461).

### Fixed
Do not assume NULL by default for binary fields (see #8477).

### Fixed
Correctly render the diff view if not the latest version is active (see #8481).

### Fixed
Update the list of countries and languages (see #8453).

### Fixed
Correctly set up the MooTools CDN URL (see #8458).

### Fixed
Also check the URL length when determining the search URL (see #8460).

### Fixed
Only regenerate the session ID upon login.