Added unit test; resolving VUFIND-643.
Allow search specs caching to be disabled without fatal error.
Resolving VUFIND-754 (Fixed wrong status and reserved status in NewGenLib ILS driver and simplified the code)
Check dependency XSLTProcessor in InstallController
Display dependency error for mcrypt in InstallController
Style fix.
Added server-side validation for feedback module; corrected typo.
Add commented-out unicode normalization option

* ../import/import.properties: Add commented-out unicode normalization
  option.
Fix missing quotation marks in a bunch of language files
Style fixes.
Added comment.
Simplified code by using jQuery validate plugin.
Merge branch 'master' into search-refactor
Allow adapter instance to be set

* VuFindSearch/Backend/Solr/Connector.php ($adapter): Renamed from
  $httpAdapterClass.
  (setAdapter): Renamed, allow adapter instance.
  (createClient): Use renamed property.
Merge branch 'master' into search-refactor
Merge branch 'search-refactor' of ssh://vufind.git.sourceforge.net/gitroot/vufind/vufind into search-refactor
Updated \VuFind\Hierarchy\TreeDataSource\Solr to use search service.
Use search service for testing Solr in install controller.
Updated reserves controller plugin to use search service.
If override IDs are an empty array, show no results (previously treated as *:* query).