remember text when closing tabs

[Yves-Alexis Perez]

Hey,

reporting a bug on Xfce using Chromium, I noticed a nice feature. I was typing my text in a textarea and wrongly tried to erase a word using ^W and thus closed the tab. I reopened the tab using the “recently closed tabs” feature and it reopened the tab in the exact state it was, including the already typed text.

This is a really nice feature and it'd be really nice to include that in midori (not sure how hard it is to keep a complete state of a web page though).

Thanks for your work!