ide; workspace; using Array<NamedItem> instead of OldList in LoadWorkspace for openedFilesNotFound.
ide; save workspace file (.ews) in json format.

Conflicts:
	ide/src/dialogs/NewProjectDialog.ec

Conflicts:
	ide/src/project/Workspace.ec

Conflicts:
	ide/src/project/ProjectView.ec
	ide/src/project/Workspace.ec

Conflicts:
	ide/src/designer/CodeEditor.ec
	ide/src/dialogs/NewProjectDialog.ec
	ide/src/project/ProjectView.ec

Conflicts:
	ide/src/project/Workspace.ec