Fixed empty space at the bottom, fixed warning at main.ts

src/view/App.tsx

@@ -196,7 +196,6 @@ class App extends React.Component<any, any> {
                 {content}
                 <link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons" />
                 <Taskview data={this.state.tasks} handleChangeTodos={this.handleChangeTodos} handleChangeDailys={this.handleChangeDailys} handleChangeHabits={this.handleChangeHabits} handleChangeRewards={this.handleChangeRewards}/>
-                <div></div>
                 <Statsview user_data={this.state.user_data} />
             </div>
             );