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