[jan] Fix updateTicket() API method (Bug #13011).
Fix typo in class name

Fixes this PHP error:

PHP Fatal error:  Class 'Horde_Themes_Css_Cache_HordeCache' not found in
/datastore/DEVEL/framework/Core/lib/Horde/Core/Factory/CssCache.php on line 56

Signed-off-by: Jan Schneider <jan@horde.org>
Bug: 13015
Fix broken function prototype

Fixes this error:

PHP Fatal error:  Declaration of Horde_Themes_Css_Cache_Horde_Cache::process() must be compatible
with that of Horde_Themes_Css_Cache::process()
in /datastore/DEVEL/framework/Core/lib/Horde/Themes/Css/Cache/HordeCache.php on line 25

Signed-off-by: Jan Schneider <jan@horde.org>
Bug: 13014
Don't crash on unknown 'migration' directories

Fixes this error:

PHP Fatal error:  Call to a member function getName() on a non-object in
/datastore/DEVEL/framework/Core/lib/Horde/Core/Db/Migration.php on line 91

Signed-off-by: Jan Schneider <jan@horde.org>
Bug: 13013