Add configuration window and many minor change.

* src/config.py: Application config class.
* src/pamhyr.py: Add app config.
* src/view/ASubWindow.py: Add some methods.
* src/view/ConfigureWindow.py: New app sub window.
* src/view/MainWindow.py: Minor change.
* src/view/ui/ConfigureDialog.ui: New ui.
* src/view/ui/MainWindow.ui: Start rename some component.
* src/view/ui/MainWindow_old.ui: Old version of main UI.