Made autoSizeColumns() to work with cells that have padding

[mpetkov]

My suggested fix for issue #812

[ceolter]

thanks. will take a look when i get time.

[arkon]

Why not just get the container's clientWidth instead of its offsetWidth? Wouldn't that include the padding and eliminate the need for these calculations?

[ceolter]

i went to work on this, and as far as i can work out, it's not needed.

in your example, i changed the overridden style to the following and it worked

.ag-fresh .ag-cell-not-inline-editing { padding: 0 40px; }