Bug 24155: Make weighting an option on advanced search

Bug 24155: Make weighting an option on advanced search

Currently we apply weighting to all searches except advanced search. The theory
being that when selecting indexes we don't want to apply weights. When searching
in ES weights are only applied to relevant results so it doesn't matter.

i.e. if weighting author*100 but searching subject, a term matching the subject search in author
is not boosted.

Given this, we should always apply weights, unless the user wishes not to

To test:
1 - Set some weighting
2 - Do some searches
3 - Note your terms and results, try advanced and regular searches specifying indexes or not
4 - Apply patch
5 - Note that opac and staff advanced search have option to apply weights
6 - Compare searches after the patch to see how weighting affects, it should be beneficial or not at all

Signed-off-by: Myka Kennedy Stephens <mkstephens@lancasterseminary.edu>
Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>
Signed-off-by: Bob Bennhoff <bbennhoff@clicweb.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>