message: style(dashboard): minor improvements to chart context menu
  Bumping "Explore/edit chart" as the first option. Getting rid of the
  old "edit chart properties" deprecated CRUD link
diff: @@ -158,9 +158,9 @@ class SliceHeaderControls extends React.PureComponent {
  </MenuItem>
  )}
  - {this.props.sliceCanEdit && (
  - <MenuItem href={slice.edit_url} target="_blank">
  - {t('Edit chart metadata')}
  + {this.props.supersetCanExplore && (
  + <MenuItem onClick={this.exploreChart}>
  + {t('Explore chart')}
  </MenuItem>
  )}
  @@ -168,12 +168,6 @@ class SliceHeaderControls extends React.PureComponent {
  <MenuItem onClick={this.exportCSV}>{t('Export CSV')}</MenuItem>
  )}
  - {this.props.supersetCanExplore && (
  - <MenuItem onClick={this.exploreChart}>
  - {t('Explore chart')}
  - </MenuItem>
  - )}
  -
  <MenuItem onClick={this.handleToggleFullSize}>{resizeLabel}</MenuItem>
  <URLShortLinkModal
  