Font Swap (IG-16)

* Regenerate Adagio and Archer webfonts, with FDK-driven hinting and
  some aggressive subsetting.
* Create "Bulletproof" @font-face styles for Adagio and Archer.
* Configure Asset Pipeline to precompile fonts.
* Back to two-space tabs, hopefully for good.
Load 'em Up

* Add WebFontLoader JavaScript library to asynchronously load webfont
  styles.
* Add Source Code Pro for future internal use.
* Switch default fonts to Archer/Adagio (IG-16 #resolve).
Assets Version

* Change `config.assets.version`, forcing Rails to recompile
  assets (IG-16 #done).
Dummy Commit

* IG-16 #done Switch text-indent on paragraphs to use ems.
Merge branch 'feature/font-swap' into develop

* feature/font-swap:
  Dummy Commit
  Assets Version
  Load 'em Up
  Font Swap (IG-16)