Log Message:
Update contao29 (and implicitly contao29-example) pacakge to 2.9.3.

Version 2.9.3 (2011-01-06)
--------------------------
- Fixed: custom templates were not always shown in "override all" mode \ 
(#2725)
- Fixed: prevent the X_FORWARDED_FOR header against XSS attacks (#2751)
- Fixed: preserve the selector fields in the personal data module (#2609)
- Fixed: skip mounted folders in the file manager if they do not exist (#2708)
- Fixed: the quick navigation modules failed to work when aliases were
  disabled (#2718)
- Fixed some minor issues