Commit 0f1f8b7b authored by Jehan's avatar Jehan

app: layers-resize and layers-scale work on one layer at once.

Making these actions multi-layer aware here means checking only exactly
1 layer is selected as these actions have GUI which shows dimensions and
preview (for the layer dimension action, i.e. layers-resize).
parent bf7d5557
Pipeline #200399 passed with stages
in 23 minutes and 30 seconds