When switching editors, make sure the selection for the new editor isn't messed up by the current editor saving its state. (name change)
Update the database treeview when the model is removed.
Some refactoring in the level code.
Mostly, redecorating and refactoring the columns in the tree and diagrams. Some preliminary work on storing the hierarchy diagram / query.
One css resource for connection tree and table like diagram elements.
Made the table joins in the hierarchy diagram work.
After build.