Warn if a script contains curly quotes

[imagejan]

Users new to programming often are not aware of the difference between straight quotes (") and typographic curly quotes (“”). See for example this, this and this forum post.

It might be useful to warn users if they try running scripts that contain those wrong quotation characters, instead of letting the respective script engine throw cryptic error messages.

Instead of in the script editor, we could also think about detecting this kind of error when interpreting the scripts, but usually it is something that only happens when you actively edit a script...