[OE-4450] An attempt to restrict label lengths.

* Updating doodle/validating the value "oninput" causes problems because the value is re-set on each keystroke. When this happens, the cursor moves to the end of the input box.
* If we want to dynamically change the validation based on scaleLevel, what should happen when the input value is longer than the max width for the scaleLevel?

Both problems could be solved by removing "realtime" validating and moving everything to onchange, but then we would need a way to inform the user of the invalid input.
[OE-4450] Added validation msg to bound field label; removed dyanmic scaleLevel msg validation (always set to 1 for now)
Merge branch 'jira/OE-4450' into release/1.7