Mac: Fixes for display using NSView based NSTableView. Not perfect yet, seems to be issues with the caching of the NSTableCellViews and the visuals are not quite what they should be... the NSTextFields are styled not how I expected. Also I fixed the display by forcing the layout of the NSTableCellView using 16x16 icon size and 20 pixel row heights. There may be a better way to calculate things automatically.