Bug 12721: (followup) Replace mysqlism by DBIx::Class

Bug 12721: (followup) Replace mysqlism by DBIx::Class

This patch removes the mysqlism (see comment #18)

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Fixed QA tools complaints about missing lines before
and after =cut in POD.

Signed-off-by: Brendan Gallagher <brendan@bywatersolutions.com>
(cherry picked from commit ef97b6b301a5c1a9ef5c63cc93933bf7442513fc)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
(cherry picked from commit 8fb9837adeecce2896085d9f3d463633a2cbb8ae)
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>