Scale: change default shortcut for "Initiate window Picker" to avoid conflit with applications

Hello all,

We've discovered when testing Compiz Reloaded that the shortcut for the function "Initiate window Picker" is in conflict with other shortcuts like "move to the previous column in a table" used by the Orca screen reader.

We propose to adopt the shortcut window + w as Compiz 0.9 does. I personally found it simpler to memorize and understand.

You could find where the shortcut is also used here: https://defkey.com/what-means/alt-shift-up

We plan to enable Compiz by default for all users of assistive technologies on Debian and we would like to avoid to make change without being benefit to all distributions.

What do you think about this proposal?

Best regards, Alex.