Do not stop genre search at first match, but continue until we have no
rules left.
Applies to section and emplacement too.

This patch also fixes the regular expression for extracting subfield
values from iso2709 data by using "positive lookahead" feature.
(see http://www.regular-expressions.info/lookaround.html)
The regexp used to fail when a field contains two consecutive subfields
with the same code. Example: 902 $a value $a another value

Conflicts:
	VERSIONS

Hotline 6.48

See merge request !317

Hotline#15192 fix record links in loans and holds page

See merge request !315

Hotline#13648 330 field truncated

See merge request !314

quotes.

Speed trap on test

See merge request !312

Master

See merge request !310

rel #12993 : User group adding use generic ZendAfi_Controlle_Action and ZendAfi_Form mechanics with custom fields

Hotline#14175 lastfm

See merge request !309

Hotline 6.48

See merge request !307