Added fields for faceted search

Added the fields "platform", "containerType" and "title", so that they
can be used as categorys in the faceted search
Added items for faceted search

Added the items "platform", "containerType" and "title", so that they
can be used in the faceted search
Added language tags

Added language tags for new faceted search categories
Edited faceted search config

edited faceted search config, so that now only "platforms",
"containerTypes" and "titles" are show as categories