Add Functionality to Lock Comment Box

[Csoper10]

Add ability to lock comment boxes size, shape, position (send to back), location on the canvas. This would allow a developer to use a template when creating workflow without accidently selecting and/or adjusting these attributes. It will also allow a user to put a tool over the top of the comment box without fear of messing up the visual display of the workflow or it getting hidden underneath the comment box.

[EVH]

I'd pile on to this one and ask for containers to stay open/closed as well. If you have a job with a bunch of those and you have them closed to save some canvas space, it can be challenging when they open back up when you re-open a workflow.