Fixed: "Ouf of Office" shows inactive agents (bug#10299).
Squashed commit of the following:

commit fb1cfbc62337a37260f20baa1be95656e2c3ebb7
Author: s7design <otrs@s7designcreative.com>
Date:   Fri Feb 28 15:26:05 2014 +0100

    Changed: it work for invalid and invalid-temporarily.  Only valid user is showed in wiget

commit b3606b35ca774577799ecb83dfa16670561c8b77
Author: s7design <otrs@s7designcreative.com>
Date:   Tue Feb 25 21:49:28 2014 +0100

    Added USERID label in next, because I made mistake in previous commit

commit 876c4ce16cb8559ceb3155c6b1486c7cefdb7596
Author: s7design <otrs@s7designcreative.com>
Date:   Tue Feb 25 21:44:22 2014 +0100

    [Bug 10299] "Ouf of Office" shows inactive agents

    Added check if user is valid in wiget Out of office