Support setting of multiple facet values in one call
Add new facet interval helper
Update facet management
Add new filter model
Externalize state of the filter expression being built
Add support for integer/float/boolean values
Add filter expression documentation
Always build a filter wrapper
Add new filter model as advanced query filter
Merge branch 'advanced_filtering' into refactor_facet_manager

Conflicts:
	AFS/SEARCH/TEST/queryTest.php
	AFS/SEARCH/TEST/searchQueryManagerTest.php
Merge branch 'refactor_facet_manager'
Import AfsFilter in global AFS import file