title: Chartjs Barchart without borders
body: <p>I am trying to build a barchart with chartjs where there should be no space between neighbouring bars. The problem i have is that I don't get rid of the borders between the bars:
  <a href="https://i.stack.imgur.com/FurQa.png" rel="nofollow noreferrer">Bars with borders</a></p>
  
  <p>This is my config:</p>
  
  <pre><code>new Chart($('#weekly-availabilities-chart'), {
    type: 'bar',
    data: {
    labels: ...,
    datasets: [
      {
        backgroundColor: 'rgba(153, 193, 72, 0.4)',
        label: 'label a',
        borderWidth: 0,
        data: dataset_1
      }, {
        backgroundColor: 'rgba(13, 39, 73, 0.4)',
        label: 'label b',
        borderWidth: 0,
        data: dataset_2
      }
    ]
  },
    options: {
    scales: {
      xAxes: [
        {
          barPercentage: 1,
          categoryPercentage: 1,
          gridLines: {
            display: false
          }
        }
      ],
      yAxes: [
        {
          stacked: true,
          gridLines: {
            color: 'rgba(0,0,0,0.05)'
          },
          ticks: {
            beginAtZero: true,
            max: 40
          }
        }
      ]
    }
  }
  });
  </code></pre>