Quick hack to fix "without snapshot" save option in Z4Fx via Standalone

(I don't see any obvious reason I can't do this. We should probably clean this
up later, not call the endpoint "saveSnapshot", etc. Also, is there a reason it
doesn't follow the snapshot pref by default?)

chrome/content/zotero/xpcom/server_connector.js

@@ -438,7 +438,7 @@ Zotero.Server.Connector.SaveSnapshot.prototype = {
 					}
 					
 					// save snapshot
-					if(filesEditable) {
+					if (filesEditable && !data.skipSnapshot) {
 						Zotero.Attachments.importFromDocument(doc, itemID);
 					}
 					

chrome/content/zotero/zoteroPane.js

@@ -3146,7 +3146,8 @@ var ZoteroPane = new function()
 			// In connector, save page via Zotero Standalone
 			var doc = window.content.document;
 			Zotero.Connector.callMethod("saveSnapshot", {"url":doc.location.toString(),
-					"cookie":doc.cookie, "html":doc.documentElement.innerHTML},
+				"cookie":doc.cookie, "html":doc.documentElement.innerHTML,
+				"skipSnapshot": saveSnapshot === false || (saveSnapshot === true ? false : undefined)},
 			function(returnValue, status) {
 				_showPageSaveStatus(doc.title);
 			});