[TIMOB-17702] Android: TableViewRow: hasCheck icon very small on high DPI screens

On higher DPI Android screens, the hasCheck icon is so small as to be nearly impossible to see. Add to it that it is gray and it's easy to think that the icon is not being shown at all. Expected results: check mark would display the same relative size on all devices regardless of the screen's DPI. In other words, that we'd be supplying graphics for each of the supported display classes.

var win = Ti.UI.createWindow();
var table = Ti.UI.createTableView();
for(var i=0;i<10;i++){
  table.appendRow(Ti.UI.createTableViewRow({title: 'Row', hasCheck: true}));
}
win.add(table);
win.open();