Clear text fields after login

include/LoginPage.h

@@ -36,6 +36,8 @@ public:
 	explicit LoginPage(QWidget *parent = 0);
 	~LoginPage();
 
+	void reset();
+
 signals:
 	void backButtonClicked();
 

src/LoginPage.cc

@@ -137,6 +137,12 @@ void LoginPage::onLoginButtonClicked()
 	}
 }
 
+void LoginPage::reset()
+{
+	username_input_->clear();
+	password_input_->clear();
+}
+
 void LoginPage::onBackButtonClicked()
 {
 	emit backButtonClicked();

src/MainWindow.cc

@@ -89,6 +89,7 @@ void MainWindow::showChatPage(QString userid, QString homeserver, QString token)
 	int index = sliding_stack_->getWidgetIndex(chat_page_);
 	sliding_stack_->slideInIndex(index, SlidingStackWidget::AnimationDirection::LEFT_TO_RIGHT);
 
+	login_page_->reset();
 	chat_page_->bootstrap(userid, homeserver, token);
 }