Bug 12885: Fix if url contains +*... and HTML5 Media is enabled

Bug 12885: Fix if url contains +*... and HTML5 Media is enabled

The special regex chars are not escaped in C4::HTML5Media.

Test plan:
1/ Set 856$u=http://www.mrqe.com/lookup?talented+mr.+ripley
2/ Enable the pref HTML5Media
3/ Go on the detail page
It should not explode.

Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>
Signed-off-by: Joonas Kylmälä <j.kylmala@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 085d766a0524e399d0c9c9e807d8c0acd0da6a19)
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>