Updated Swedish translation, thanks to Peter Krantz.
Squashed commit of the following:

commit 0ac3f9c1126cc7b7edbc80e1f937c55c9c757114
Author: Peter Krantz <peter@peterkrantz.se>
Date:   Sun May 4 19:28:34 2014 +0200

    Agent -> handläggare + cleanups capitalization + new strings

commit 781654b4ee2097c7e97a9907dede62cb10d3ebb9
Author: Peter Krantz <peter@peterkrantz.se>
Date:   Sun May 4 18:46:21 2014 +0200

    Added some missing swedish translations.

commit 609efb067a4972842f5b2cb99e305a2ab6455879
Author: Peter Krantz <peter.krantz@gmail.com>
Date:   Sun May 4 18:23:17 2014 +0200

    Update sv.pm

    Added some missing translations
Updated Japanese translation, thanks to Toshihiro Takehara.
Conflicts:
	Kernel/Language/ja.pm
Fixed a bug in otrs.PendingJobs.pl with missing StateIDs.
Improved an error message in otrs.PendingJobs.pl.
Updated Swedish translation, thanks to Peter Krantz!

Conflicts:
	Kernel/Language/sv.pm