This PR updates the foam version of acalc app to match the deployed app.
This includes more a11y fixes and a new keyboard shortcut: Pressing 'f' will now toggle the screen ripples which appear during error or an "all clear" operation.
Also removes the "rad/deg" label from the tab order as it is already accessible to users with screen readers via the hotkey / pressed attributes on the toggle buttons.
This PR updates the foam version of acalc app to match the deployed app. This includes more a11y fixes and a new keyboard shortcut: Pressing 'f' will now toggle the screen ripples which appear during error or an "all clear" operation. Also removes the "rad/deg" label from the tab order as it is already accessible to users with screen readers via the hotkey / pressed attributes on the toggle buttons.