Bug 6458: Incorrect translation processing / serials/...

Bug 6458: Incorrect translation processing / serials/...

Fixes problems with template toolkit directives within HTML tags
for the serials module.

Serials > add/modify subsciption

serial-issues-full.tt seems to be unused?
I couldn't find the page in the serials module.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
(cherry picked from commit 8f8fc1088a2c5b43ed03fb06c9c842b7c721a838)

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