title: Set QTableWidget cell's borders to 0px
body: <p>How can I set the cell borders in a QTableWidget to 0px? Preferably I can choose which sides of a cell's border to set to 0, but I can live with setting them all to 0 as well.</p>
  
  <p>EDIT: Either setting the border to 0px or setting the color to white would be good as well.</p>