germania-sacra: adapt person display to XML free fields

requires data from: https://github.com/subugoe/germania-sacra-daten/commit/12b7729cdd50bf9df396d181cbb88fb8e1a8d041
germania-sacra: query non _xml personen fields
add ability to have alternate query for fields

implemented for Text field partial to use a checkbox for switching between query types
edfu: reconfigure search to use a checkbox with the Transliteration field

uses the new feature from 36c74b72fd7055731c8330045974a96365e50be3
to solve #65
germania-sacra: add option for similarity search to name field

also explicitly give the fields to be highlighted for better Solr highlighting performance
use empty array() as default values in newArray View Helper

for #78
ensure we have an array (not NULL) when using array_key_exists

by setting a default value

for #78