Allow variable rename that's in use

[katrinleinweber]

Expected Behavior

Renaming a variable throughout an entire sequence should be possible. Like search'n'replace in a text editor.

Actual Behavior

If I understand…

Farmbot-Web-App/frontend/sequences/locals_list/variable_form.tsx

Lines 353 to 359 in a5cfa75

	return (allowedVariableNodes == AllowedVariableNodes.parameter
	&& !this.props.labelOnly)
	? <input
	style={{ background: Color.lightGray }}
	value={value}
	readOnly={true}
	onClick={() => error(t("Can't edit variable name while in use."))} />

…correctly, it's currently necessary to remove a variable from a sequence before renaming it?

However, it would IMHO be helpful to directly rename it in all sequence elements at once, for example to avoid errors in re-adding it.