Started adding async calls for upgrading to Meteor 3.0. Numerous other fixes.

server/importMissing.js

@@ -1,10 +1,10 @@
 Meteor.methods({
-	"importMissingSales": function() {
+	"importMissingSales": async function() {
 		console.log("Importing Missing Sales...");
 		try {
-			let products = Products.find({}).fetch();
-			let venues = Venues.find({}).fetch();
-			let measures = Measures.find({}).fetch();
+			let products = await Products.find({}).fetchAsync();
+			let venues = await Venues.find({}).fetchAsync();
+			let measures = await Measures.find({}).fetchAsync();
 			let productNameMap = {};
 			let venueNameMap = {};
 			let measureNameMap = {};