hold own copies of js libraries

* jquery
* jqueryui
* lodash
* leaflet
generalize URLs to not explicitly use http protocol
stay on same protocol on more links/APIs

* nominatim
* links to osm.org
* links to wikipedia, wikidata
add inline comment
allow "wizard query" to be passed as URL argument
Merge branch 'https' into gh-pages
consolidate templates as special cases of the query wizard
work around some special case Overpass API glitches

* Overpass mistakes tabs, newlines, etc as spaces:
  https://github.com/drolbr/Overpass-API/issues/91
* Overpass interprets emtpy string as wildcard:
  https://github.com/drolbr/Overpass-API/issues/53