closes #204. Welcome screen redesign

src/gui/WelcomeWidget.h

@@ -19,6 +19,7 @@
 #define KEEPASSX_WELCOMEWIDGET_H
 
 #include <QWidget>
+#include <QListWidgetItem>
 
 namespace Ui {
     class WelcomeWidget;
@@ -32,6 +33,15 @@ public:
     explicit WelcomeWidget(QWidget* parent = nullptr);
     ~WelcomeWidget();
 
+Q_SIGNALS:
+	void newDatabase();
+	void openDatabase();
+	void openDatabaseFile(QString);
+	void importKeePass1Database();
+
+private Q_SLOTS:
+	void openDatabaseFromFile(QListWidgetItem* item);
+
 private:
     const QScopedPointer<Ui::WelcomeWidget> m_ui;
 };