Improving user experience under Ubuntu

Marco Scopesi and I have written a Neubot command that shows the web user interface in an ordinary window, provided that Gtk and WebKit bindings for Python are available. In practice, this means that Neubot now uses its own GUI instead of the browser, at least under Ubuntu. This work will be included in Neubot 0.4.2.

Here is how it looks like:

pywebkit image

Many thanks to Marco for his help!