Adjustable Folder Content

The project folders are now more flexible when it comes to which models can be created and managed. For each folder it's content can be adjusted by a Contents tag that changes the UI for context menu (e.g. New menu), drag and drop behavior, etc.

Boolean Profile Properties

Extending model concepts with new fields (profile properties) support now the type Boolean. Whenever a boolean property is added, it will be shown as a checkbox in the UI.