Checkstyles.
Bracing Bootstrap advanced search for configs.
Added SearchParams helper.
Implemented activateAllFacets() for Summon\Params.
- Refactored some shared functionality to Base\Params.
Eliminated hard-coded publishDate from Advanced Search code.
- Fixes broken Summon date range on advanced screen.
- Resolves VUFIND-627.
Fixed date slider bugs.
Merge branch 'master' of https://github.com/vufind-org/vufind into vudl

Conflicts:
	module/VuDL/src/VuDL/Connection/Solr.php