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[OPEN-EXTJSIV-1640]grid-rowbody style in _tree.scss
There's a CSS definition for grid-rowbody in resources/themes/stylesheets/ext4/default/widgets/_tree.scss that overrides the padding for the grid-rowbody in _grid.scss, of the same directory, when it is compressed into ext-all.css.
At a glance, grid-rowbody does not get used by the tree code, and should probably be removed, since it override the default padding intended for the grid rowbody feature.
This is for the beta2 release.
Still exists for the beta3 release, and ext-all-debug.css has been compressed, making it harder to real with locally (until it is fixed).