Fix #3401 Toggling axes in the scale tool has no effect

v5.1.1 [ci-build]

Fix #3285 knife tool offset issue

Merge branch 'master' into patch

Add edge case handling for #3402

Fix cube resizing on two axes setting size to the same value on both

Revert default behavior of "Flip Animation" action

Fix #3399 Opacity not fully supported on alpha mask layers

Fix #3407 Cannot reorder tools in toolbar

Fix animation export bug in web app

Restrict trackpad panning to trackpad zoom events

Fix issue when using scale keyframes in an overriding animation

Fix result of comparing beta to non-beta in version util

Improve toast notification style

Fix resizing texture layer moves it instead