hide tour on various pages

src/components/Navbar.js

@@ -25,6 +25,7 @@ import * as steps from './Tour';
 import { faBars, faChevronLeft, faLayerGroup, faSignInAlt, faSignOutAlt, faCertificate, faUserCircle, faQuestionCircle, faCog, faChalkboardTeacher, faTools, faLightbulb } from "@fortawesome/free-solid-svg-icons";
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import * as Blockly from 'blockly'
+import Tooltip from '@material-ui/core/Tooltip';
 
 
 const styles = (theme) => ({
@@ -96,6 +97,8 @@ class Navbar extends Component {
                   Tutorial
                 </Typography>
               </Link> : null}
+            {/^\/(\/.*$|$)/g.test(this.props.location.pathname) ?
+              <Tooltip title='Hilfe starten' arrow>
                 <IconButton
                   color="inherit"
                   className={`openTour ${this.props.classes.button}`}
@@ -104,6 +107,7 @@ class Navbar extends Component {
                 >
                   <FontAwesomeIcon icon={faQuestionCircle} size="s" />
                 </IconButton>
+              </Tooltip> : null}
             <Tour
               steps={steps.steps}
               isOpen={this.state.isTourOpen}