Added frond-end and needed get calls.

endpoints/listgroupusers.js

@@ -0,0 +1,20 @@
+//Call for listing all groups with their users - needed for control panel
+//
+const handleListGroup = (req, res, db) => {
+    db.transaction (trx => {
+        trx.select('*')
+        .from('groups')
+        .orderBy('groupname', 'asc')
+        .orderBy('username', 'asc')
+        .then( data => {
+            res.json(data);
+        })
+        .then(trx.commit)
+        .catch(trx.rollback)
+        .catch (err => res.status(400).json('Error accesing database.'))
+    })
+}
+
+module.exports = {
+    handleListGroup
+}