work in progress on implementing the new model
minor changes
Merge branch 'feature/ui_rework' of github.com:structr/structr into feature/ui_rework

Conflicts:
	structr-ui/src/main/java/org/structr/web/entity/html/HtmlElement.java
	structr-ui/src/main/java/org/structr/websocket/command/AddCommand.java
Merge branch 'feature/ui_rework' of github.com:structr/structr into feature/ui_rework
merged changes from cmorgner