Updated Latin Serbian translation, thanks to S7designcreative.
Squashed commit of the following:

commit 71faa92eed43ff09eca919cbf9835b375bf5bdc2
Author: s7design <otrs@s7designcreative.com>
Date:   Fri May 9 17:13:04 2014 +0200

    .

commit a8a5fcab00e0d27592b756f0004496c5c9efc634
Author: s7design <otrs@s7designcreative.com>
Date:   Fri May 9 17:05:52 2014 +0200

    .

commit a6e34ba11c7fb103d38cf20a1a4588cd713d7b97
Author: s7design <otrs@s7designcreative.com>
Date:   Fri May 9 16:56:43 2014 +0200

    fixed mistake

commit cfcf4b66c1f3c1cc79aa55049b024b83f5412b83
Author: s7design <otrs@s7designcreative.com>
Date:   Fri May 9 16:24:53 2014 +0200

    Translate serbian latin