Make all publicationTitle fields multi-line, not just bookTitle

For some reason applied only to Book Title in #890

https://forums.zotero.org/discussion/comment/463195/#Comment_463195

chrome/content/zotero/xpcom/data/itemFields.js

@@ -393,7 +393,8 @@ Zotero.ItemFields = new function() {
 		var fields = [
 			'title',
 			...this.getTypeFieldsFromBase('title', true),
-			'bookTitle'
+			'publicationTitle',
+			...this.getTypeFieldsFromBase('publicationTitle', true),
 		];
 		return fields.indexOf(field) != -1;
 	}