Bug 13265: Use sessionStorage to store searches instead of cookies

Bug 13265: Use sessionStorage to store searches instead of cookies

This is a counter patch.
The idea is to provide a permanent solution for the cookie length issue
we occurred on storing the searches (intranet side).

Test plan:
Launch as many searches as you can (don't forget to sleep).
You should not get any error.
Confirm there is no regression using the results browser.

Tested with 6 parralel searches in different tabs (with alternatively browising up and down). No problems found.
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>