* [ios] Add failing tests for scale bar updates.
* [ios] Remove borderLayer
* [ios] Ensure bar sections have non-fractional width
* [ios] Add RTL override
* [ios] Update constraints/layout
* [ios] Invalidate scalebars size, after the parent's layout has happened (to ensure the view dimensions are correct when re-laying out the scale bar.
* [ios] Refactor layout
* [ios] Update changelog / remove commented code.
* [ios] Remove whitespace
* [ios] Stop integration tests asserting (when scale bar is hidden). Also reduces the # of calculations (since updateConstraints and layoutSubviews can be called outside of our control).
* [ios] Moves declaration of properties for testing.
* [ios] Removes redundant property attribute
* [ios] Updated change log
- Fixes scale bar not being visible until a camera change event.
- Adds IBInspectable for scale bar visibility.
- Add tests of the scale bar being added to the map view
