add unicode folding to es config (fixes #707)
add unicode folding to es config (fixes #707)

codarchlab/gazetteer,codarchlab/gazetteer,dainst/gazetteer,codarchlab/gazetteer,dainst/gazetteer,dainst/gazetteer,dainst/gazetteer,codarchlab/gazetteer,codarchlab/gazetteer,dainst/gazetteer,dainst/gazetteer