Template for ui-grid incorrectly sets last row's bottom border

[dbrink]

The bottom border on the last row is never made visible because the binding expression references grid.getTotalRowHeight() which isn't defined.

.grid{{ grid.id }} .ui-grid-row:last-child .ui-grid-cell {
   border-bottom-width: {{ ((grid.getTotalRowHeight() < grid.getViewportHeight()) && '1') || '0' }}px;
}

[RobPierce]

I see this has been around for a long time, I've come up with a slight tweak to this that should achieve the result that the logic here seemed to be trying to create, given the getTotalRowHeight function doesn't exist:

Replace grid.getTotalRowHeight() with (grid.getVisibleRowCount() * grid.options.rowHeight)

I'll create a PR for this.

[mportuga]

#6515