added tabbed view

new config page with ability to edit config file
new features in config class - setting member variables
new button locations in gui

inc/gui/MainWindow.h

@@ -0,0 +1,63 @@
+/**
+ * Main GUI controller - User IO handlings
+ *
+ * @author Lukas Heiligenbrunner
+ * @date 09.05.2020
+ */
+
+#pragma once
+
+#include <QtWidgets/QMainWindow>
+
+namespace Ui {
+    class MainWindow;
+}
+
+class MainWindow : public QMainWindow {
+Q_OBJECT
+
+public:
+    /**
+     * constructor with basic initializations
+     */
+    explicit MainWindow();
+
+    /**
+     * destruct all gui elements
+     */
+    ~MainWindow();
+
+private:
+    Ui::MainWindow *ui;
+
+    /**
+     * all static initializations of custom gui elements
+     */
+    void initGui();
+
+private slots:
+
+    /**
+     * executed click handler for config button
+     */
+    void checkConfigBtn();
+
+    /**
+     * executed click handler for refresh btn
+     */
+    void refreshIPBtn();
+
+    /**
+     * executed click handler for save config btn
+     */
+    void saveConfigBtn();
+
+signals:
+
+    /**
+     * append a String line to the Log field
+     *
+     * @param QString string to be appended
+     */
+    void appendLogField(QString);
+};