Clean and simple saving experience

Big upgrade from using the bookmarklet!

Fix it already or remove from list this 'corrupt file'!

I looked a few months ago but there was no official extension yet, it was about time, thank you!

The only problem, just like the Chrome extension, is the lack of an option to disable the context menu entry, I don't really use it, it's just clutter to me.

Could not download and install as File is corrupt.