replace image previews by webfont preview
remove mustache js, really not needed anymore
show progress and messages always globally in the top bar
metafonts navigates to 1st sub-entry (metafonts/bespoke)
mustache -> slim
fix modulator spacing (char chooser, menu)

slim doesn't inline enumerated html tags, so there's some more space between them...
adjust margins/paddings/spacings for previews

mostly increased spacings, e.g. line-height of typewriter...
update faq to reflect webfont previews
add github icon to meta navigation
show info message when modulator is not supported
fix nerd mode toggle (stupid typo)