use latest material ui

interface/src/App.js

@@ -9,7 +9,6 @@ import indigo from '@material-ui/core/colors/indigo';
 import orange from '@material-ui/core/colors/orange';
 import red from '@material-ui/core/colors/red';
 import green from '@material-ui/core/colors/green';
-import blue from '@material-ui/core/colors/blue';
 
 import JssProvider from 'react-jss/lib/JssProvider';
 import { create } from 'jss';

interface/src/components/MenuAppBar.js

@@ -19,7 +19,6 @@ import ListItemText from '@material-ui/core/ListItemText';
 import MenuIcon from '@material-ui/icons/Menu';
 import WifiIcon from '@material-ui/icons/Wifi';
 import SystemUpdateIcon from  '@material-ui/icons/SystemUpdate';
-import ShowChartIcon from  '@material-ui/icons/ShowChart';
 import AccessTimeIcon from '@material-ui/icons/AccessTime';
 import SettingsInputAntennaIcon from '@material-ui/icons/SettingsInputAntenna';