Bar Chart has margin/padding on left and right even when no Y-Axis visible

[mpunak]

Expected behavior
Hiding an Axis by setting the option display:false for the axis should have the chart render without padding to accommodate the space previously occupied by the axis.

Current Behavior
Hiding the Y Axis only performs the expected behavior if the X axis is also hidden. If the X Axis is visible, hiding the Y axis will not cause the chart to re scale to consume the area previously used by the now hidden Y Axis.

Hiding the X Axis performs the expected behavior, re scaling the bars/display area of the chart to consume the area previously used by the now hidden X Axis.

https://jsfiddle.net/ceg2qntd/3/

Steps to Reproduce

1. Click on the "Toggle X" button and notice how the chart resizes itself to consume the space previously occupied by the X Axis
2. Click on the "Toggle Y" button with the X Axis visible and notice how the chart does NOT resize itself to consume the space previously occupied by the visible Y Axis
3. Click on the "Toggle Y" button with the X Axis hidden and notice how the chart resizes itself to consume the space previously occupied by the visible Y Axis

Context

Proper sizing/padding/margin control on the chart is crucial for proper alignment with elements outside of the chart itself.

[nagix]

It seems that extra spaces are added on the left and right based on the tick label widths. I guess these spaces are required when offset is false but it should be differently calculated when it is true.