Feature request: make the windows disappear after succesfully saved the bookmark

[syldub69]

When we successfully saved the bookmark in a folder, could the "green" window disappear after 1 or 2 seconds?
Ideally, could you implement an option to configure the time?
And for instance we could set the value to 0 if we want the windows not to disappear until clicking on the "Bookmark added" link.

[JoseTomasTocino]

I've added a timer in the last commit (c70c81e) so that the popup closes automatically after about 500ms. I'll have to read about adding a config panel to an extension, not sure if there's a cross-browser way of doing it.

[MartinLichtblau]

@JoseTomasTocino The extension popup does not close after 500ms, but after 3+ secs. Far too long in my opinion.
Should close quickly after bookmark is saved.