Bug 929 : Followup fixing date formatting

Bug 929 : Followup fixing date formatting

This patch introduces a Filter (KohaDates) for use in templates
[% USE KohaDates %]
[% somevariable | $KohaDates %]

This will format the date in the format specified by the systempreference

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
(cherry picked from commit 01875b565d7c04b3b00ba1986f824cae7d1fb2a9)

Signed-off-by: Chris Nighswonger <chris.nighswonger@gmail.com>
(cherry picked from commit 0942a21db2a82c002c75f5d303561b9c39a24914)

Signed-off-by: Chris Nighswonger <chris.nighswonger@gmail.com>