Created a new class GUI.

Class creates and positions the components
(buttons, textfields etc.) of the applications
graphic user interface.

Signed-off-by: Roope Rantanen <roopepe@hotmail.com>
Created a new class App, which is the main class of the application.

Signed-off-by: Roope Rantanen <roopepe@hotmail.com>
Merge pull request #1 from jarikurri/devel

Pulled devel