update ruby to 2.0, update gems
sinatra app with namespaces, configuration to module
change to panter hosting

* rvm -> rbenv
* passenger -> unicorn
fix indentation in db.yml.sample
rename greyfont github repo to metaflop
update mf
support for glyphs_preview file

the glyphs preview file contains only a subset of all the available
glyphs of the font. this is used for the preview, as we don't
need to generate all the glyphs.
mf2pt1 -> mf2outline
add adjuster and bespoke directly as submodules

no need for the intermediate metaflop-font repo.
this is cumbersome for no reason.