General settings (#28)

adding ui for general settings | adding 'working hours' as new feature

ui/src/components/menu/Menu.js

@@ -1,6 +1,6 @@
 import React from 'react';
 import { useHistory } from 'react-router-dom';
-import { Menu } from 'semantic-ui-react';
+import { Icon, Menu } from 'semantic-ui-react';
 
 import './Menu.less';
 import { useLocation } from 'react-router';
@@ -19,7 +19,7 @@ const TopMenu = function TopMenu({ isAdmin }) {
         className={isActiveRoute('jobs') ? 'topMenu__active' : 'topMenu__item'}
         onClick={() => history.push('/jobs')}
       >
-        Job Configuration
+        <Icon name="search" /> Job Configuration
       </Menu.Item>
 
       {isAdmin && (
@@ -29,7 +29,18 @@ const TopMenu = function TopMenu({ isAdmin }) {
           className={isActiveRoute('users') ? 'topMenu__active' : 'topMenu__item'}
           onClick={() => history.push('/users')}
         >
-          User configuration
+          <Icon name="user" /> User configuration
+        </Menu.Item>
+      )}
+
+      {isAdmin && (
+        <Menu.Item
+          name="general"
+          active={isActiveRoute('general')}
+          className={isActiveRoute('general') ? 'topMenu__active' : 'topMenu__item'}
+          onClick={() => history.push('/generalSettings')}
+        >
+          <Icon name="cog" /> General Settings
         </Menu.Item>
       )}
     </Menu>