Add autosave option when focus out + apply button for the color chooser

 + Add a new feature : autosave when the editor lose focus (file switching, pop-up, alt-tab, ...).

This add an interesting feature that could help some developers. It add an unwanted behavior (pop-up saving), but I think the feature stay interesting.


+ Add a new button "apply" @ color chooser …

Bad news: don't work for windows, but I think we can add that feature since it doesn't break windows compatibility.