Increase to 20 courses on the page

dbTools/profile.js

@@ -311,7 +311,7 @@ userDB = (DB) => {
     //Courses
     DB.getCourses = async () => {
         let r = await DB.profileCols.find({isGroup: true, isCourse: true})
-                .sort({ lastUpdate: -1 }).limit(10)
+                .sort({ lastUpdate: -1 }).limit(20)
                 .toArray().catch((err) => {
             console.log(err);
             return false;