The ScaleDisplay displays the current map scale (1:1K or 1: 1000).
YAML-Definition:
tooltip: 'Scale Bar'             # text to use as tooltip
target: ~                        # Id of Map element to query
anchor: 'inline'/'left-top'/     # scale bar alignment, default is 'right-bottom'
  'left-bottom'/'right-top'/     # use inline f.e. in sidebar
  'right-bottom'
None.
None.
None.