Bug 10857: add ability to remove active facets when refining search results

When searching (at the OPAC or pro), facets can be enabled but never
disabled. So a user is obliged to relaunch the search.

This patch adds a new link "[x]" at the right of each selected facet.
This link relaunch the search without this facet.

Test plan:
- Launch a search (OPAC and pro)
- Enable some facets
- Disable some facets

Signed-off-by: sonia bouis <sonia.bouis@univ-lyon3.fr>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Patches pass all tests and QA script. Nice feature!

Tested in Boostrap and Prog, adding end removing multiple
facets in different sequences, adding and removing the
availability limit.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10857: (follow-up) encode 'limit' parameter values

to allow facets with '&' character.

Signed-off-by: sonia bouis <sonia.bouis@univ-lyon3.fr>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10857: (follow-up) update Bootstrap theme

Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Bug 10857: (follow-up) make it possible to remove facets that contain diacritics

Signed-off-by: Galen Charlton <gmc@esilibrary.com>