Small improvements.

Squashed commit of the following:

commit 2dd09441aefd87ec6873bed7924245d06cd99188
Author: root <root@otrs-dev.(none)>
Date:   Tue Sep 24 14:17:02 2013 +0200

    Added a note about postmaster filters evaluation order (Cyrille).

commit e63e37cf4be3153d036667ecd729c697fe8e45de
Merge: 4db1ed4 bbda97a
Author: root <root@otrs-dev.(none)>
Date:   Tue Sep 24 11:27:36 2013 +0200

    Merge branch 'rel-3_2' of https://github.com/OTRS/doc-admin into rel-3_2

commit 4db1ed4627ddd0d00bb995da0fbcd70cabf6f40b
Author: root <root@otrs-dev.(none)>
Date:   Fri Jul 5 04:02:47 2013 +0200

    "Ticket::Frontend::CustomerInfo*" parameters are now managed via SysConfig.

commit e023b46cc9aad2221a8c038179b538738a1e0329
Author: root <root@otrs-dev.(none)>
Date:   Fri Jul 5 03:59:27 2013 +0200

    The "Ticket::Frontend::CustomerInfoQueue" setting is obsolete.