Implemented the view folder buttons on the main window.

util/osutils.cpp

@@ -0,0 +1,25 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "osutils.h"
+
+#include <QDesktopServices>
+#include <QUrl>
+#include <QFileInfo>
+
+void openInDefaultProgram(QString filename)
+{
+	QDesktopServices::openUrl("file:///" + QFileInfo(filename).absolutePath());
+}