Fix #11384: add missing break statements.
Remove commented out and unused code.
Add "Scale Proportionally" checkbox.

This enables the user to scale the ROI proportionally.
It is a checkbox element in the Measurement Tool that, when
activated, will change width and height in unison.
Clean up imports and refactor code.
Remove autounboxing - use primitives.
Use short-circuit operator in "if" statement.
Merge pull request #1530 from bpindelski/11384-roisize

Fix ROI resizing in Insight (see #11384)