Fix easy bugs in schema editor
x deselection-click on elements not working
x click on expander selects element
x element should be expanded as soon as a child is inserted
? double-or-more-clicks on element result in multiple loading and
displaying data (bad if we change item and call takes long)
? warning icons are not always drawn
? name conventions are kept when creating new elements, not when editing
them
(from redmine: issue id 304, created on 2018-01-22tgradl, closed on 2018-01-22)