Wikipedia: handle separators in authors and publishers, add language

Tested locally by exporting about a hundred works from Primo (beic.it).
Maybe ZU.trimInternal() would do all the spacing problems. However, I don't think we should do the reorder for all data. If I search for "&" or "," as publisher in my current Zotero library I find for example
 * Hodges, Foster & Co.
 * The Minerals, Metals & Materials Society
 * ProQuest Information & Learning
 * O'Reilly Vlg. Gmbh & Co.
 * Hessisches Ministerium für Landwirtschaft, Forsten und Naturschutz, Landentwicklung
 * Office of Plans and Policy, Federal Communications Commission
 * printed by Henry Hills, printer to the King's most Excellent Majesty, for His Household and Chappel
 * printed for Samuel Smith, at the Princes Arms in St. Paul's Church-yard

The reordering in these example would be wrong. The publication date (<1831) seems for me to be too weak for a condition.