Revamp w3m twitter tweet-hiding.

See the lengths I go to not to have to unfollow jackasses.
Complete 'twidiots' filtering interface.
Switch toggle-twidiot-filtering to C-c j
(Turns out binding things to C-x is a bad idea!)

Adds useless cruft: espeak-toggle-language, which is immediately
obviated by get-lang, which automatically determines the language
of a tract of text before passing it to espeak.

Hippie expand is reconfigured (hopefully) to be less awful.
Moves get-lang to .emacs, since it depends on unrelated functionality.

Adds espeak-speed as configurable.

I also revamped my xmodmap bindings to align with Portuguese.