Updated meteor; Modified the assignments byPerson page considerably to improve the workflow; Added an external id to sites; Added an import for students; Improved the students page.

imports/ui/App.jsx

@@ -1,6 +1,6 @@
 import { Meteor } from 'meteor/meteor';
 import {Roles} from 'meteor/alanning:roles';
-import React, { useState } from 'react';
+import React, {useEffect, useState} from 'react';
 import {createTheme, ThemeProvider} from '@mui/material/styles'
 import { useTracker } from 'meteor/react-meteor-data';
 import _ from 'lodash';