Bug 8061: RTL CSS overrides (OPAC)

Bug 8061: RTL CSS overrides (OPAC)

This patch repairs a few things in templates and CSS to allow
for the injection of right-to-left CSS, also in this patch.
It should apply to 3.8 and master.

To test, install and enable a right-to-left language for the
OPAC, currently Hebrew or Arabic.
The Arabic OPAC translations for 3.6 are mostly-complete, so
they are a good test case.

It's helpful to have a reader of the language handy, but the
layout should be easy enough to figure out, even for
non-readers.

Signed-off-by: Karam Qubsi <karamqubsi@gmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Amended patch adding back author and adding sign off.

Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>