Resolve more errors

src/components/Main.js

@@ -10,6 +10,9 @@ import Statistics from './pages/Statistics';
 import Groups from './pages/Groups';
 import News from './pages/News';
 import Homework from './pages/Homework';
+import Applications from './pages/Applications';
+import EventDetail from './pages/EventDetail';
+import ApplicantProfile from './pages/ApplicantProfile';
 
 const Main = () => (
   <Switch>
@@ -22,6 +25,9 @@ const Main = () => (
     <Route path='/statistics' component={Statistics} />
     <Route path='/groups' component={Groups} />
     <Route path='/homework' component={Homework} />
+    <Route path='/events/:id' component={EventDetail} />
+    <Route path='/applications' component={Applications} />
+    <Route path='/applicant/:id' component={ApplicantProfile} />
     <Route component={NotFound} />
   </Switch>
 );

src/reducers/index.js

@@ -12,6 +12,9 @@ const rootReducer = combineReducers({
   news: NewsReducer,
   newNews: AddNewsReducer,
   selectedNews: EditNewsReducer,
+  events: EventReducer,
+  trainees: TraineeReducer,
+  notes: NoteReducer,
   homeworks: HomeworksReducer,
   newTask: AddTaskReducer,
   newSolution: AddSolutionReducer,