id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
12925	Move main window management to new class	michael2402	team	"Create a new Class `MainFrame` for the main window, move code from `Main` and `MapView` there.

This class should do:
- The title management
- Basic geometry setup
- Automatically display the start screen as long as no layers are present.
- Do all MapFrame handling

Long term goals:
- Remove Main.gettingStarted
- Do not destroy the MapFrame if all layers are removed - keep an empty layer list. This would remove many Main.map == null checks and prevent problems for missing checks.

We should get away from the concept that the UI will always be structured the way it is now."	enhancement	new	normal		Core			gsoc-core	Don-vip bastiK stoecker