message: correctly compute slice width in dashboard
diff: @@ -12,6 +12,7 @@ import {
  GRID_MIN_COLUMN_COUNT,
  GRID_MIN_ROW_UNITS,
  GRID_BASE_UNIT,
  + GRID_GUTTER_SIZE,
  } from '../../util/constants';
  const CHART_MARGIN = 32;
  @@ -131,8 +132,14 @@ class ChartHolder extends React.Component {
  >
  <Chart
  id={component.meta.chartId}
  - width={widthMultiple * columnWidth - CHART_MARGIN / 2}
  - height={component.meta.height * GRID_BASE_UNIT - CHART_MARGIN}
  + width={Math.floor(
  + widthMultiple * columnWidth +
  + (widthMultiple - 1) * GRID_GUTTER_SIZE -
  + CHART_MARGIN,
  + )}
  + height={Math.floor(
  + component.meta.height * GRID_BASE_UNIT - CHART_MARGIN,
  + )}
  sliceName={component.meta.sliceName || ''}
  updateSliceName={this.handleUpdateSliceName}
  />
  