When converting the RegionCommentBlockView class to TypeScript, we made all

of its attributes private. With the doc review work in Power Pack, we'll have

a child class of RegionCommentBlockView for document region comments. We

want to be able to access the scale and move state attribute from this

child class, but we can't do this since they've become private on RB7.
This reverts back to how we had them before, renaming them from private

variables to their old _scale and _moveState names thus making them

public. This also means that for doc review region comments in Power Pack,

we don't have to deal with variable name compatibility, since the _scale

and _moveState name is used across RB5, 6, and 7.0.1.
One thing to note is that this means Power Pack 6 doc review region comments

will be broken on Review Board 7.0, they'll only be supported on 7.0.1+.

And, Power Pack 5.2.4's PDF review comments are only supported on 7.0.1+.

These comments are currently broken for 7.0. anyways.

Ran JS unit tests.
Tested created/moving/resizing/deleting PDF region comments.
Tested created/moving/resizing/deleting image region comments.