Added new WelcomeScreen widget

The new WelcomeScreen widget is intended to be shown after startup
by default. It allows the user to choose how to start the session,
i.e. shows a list of recently edited projects, a list of new stuff
at the Sharing Platform as well as some help related information and
links.

include/WelcomeScreen.h

@@ -0,0 +1,57 @@
+/*
+ * WelcomeScreen.h - header file for WelcomeScreen
+ *
+ * Copyright (c) 2009 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef _WELCOME_SCREEN_H
+#define _WELCOME_SCREEN_H
+
+#include <QtGui/QWidget>
+
+
+namespace Ui { class WelcomeScreen; }
+class QListWidgetItem;
+
+
+class WelcomeScreen : public QWidget
+{
+	Q_OBJECT
+public:
+	WelcomeScreen( QWidget * _parent );
+	~WelcomeScreen();
+
+
+private slots:
+	void createNewProject();
+	void importProject();
+	void openTutorial();
+	void instantMidiAction();
+	void openOnlineResource( QListWidgetItem * _item );
+
+
+private:
+	Ui::WelcomeScreen * ui;
+
+} ;
+
+#endif
+