Consider implementing "clear all incorrect" functionality

[SiAdcock]

After clicking "check word", some users like to make the letters disappear from the grid. It's currently possible to clear the selected word using the "clear word" button.

Upon clicking "check all", there's no easy way of clearing the letters from all incorrect words.

Can we add a "clear incorrect words" button or something similar?

[petternitter]

@petternitter to pick this up with UX to figure out what it might look like.