Updated Japanese translation, thanks to Norihiro Tanaka.
Fixed: No use Ticket::Hook in AgentLinkObject (bug#9675).
Squashed commit of the following:

commit 7590ccbdf29c816238d1ee1764b36e1e92766930
Author: s7design <otrs@s7designcreative.com>
Date:   Tue Feb 25 14:45:52 2014 +0100

    [Bug 9675] No use Ticket::Hook in AgentLinkObject

    Added Ticket::Hook from config instead only Ticket#
Updated.
Enhanced test.
Merge remote-tracking branch 'upstream/master' into otrs-master