Application model - Highlight on the fly

[TC-14]

When you have a larger application model and you're browsing through the element tree it would be nice if the application modeller would highlight the elements on the target application as you select the element.

That way it would be easy to find the correct element (if you're not sure of it by the "should-be-self-evident-element-name"). You select the element on the tree, see the details on the right pane and the red rectangle on the application automagically (without pressing the Highlight button).

If there's an error in the element attributes, the application modeller could highlight that by changing the element red on the tree view. If recognized, it could also show the conflicting attribute in red. BUT not pop yet another popup that needs to be OK'd before continuing. There's too many popups already in use. 😉