Use type badges for filters menu

[vinnydiehl]

I have beautiful type badges made already, why am I using boring checkboxes for the filters menu? Let's hide them and instead display the type badges at low opacity, changing them to 100% opacity and activating the hidden checkbox (and thus the form) when clicked.

Also, nothing is weak to normal. It is a useless button as it guarantees no results will be displayed, but it looks more uniform to keep it there. Unsure what to do about that.