Improve usability of main navigation

Add consistent width to nav anchors to remove the ragged edge feel when
mousing over the list.
Flipped anchors display to block level instead of adding width.
Don't ignore bunyan's bin
refactor license
Merge remote-tracking branch 'barnabyc/fix_ragged_edge_nav'
upgrade stylus
No need to monkey-patch HEAD responses

This is the default behavior in 0.8 and up now
update cluster-master to 0.0.6
point replicate devDependency to git fork
Don't reload cluster size on SIGHUP

Too much added complexity
Add barnaby to authors
fix up header click area and position
Browse by author, updated, keyword, alphabetical
Add 'dependedUpon' browse page
Add star browsing
Move /keyword route to /browse/keyword

Pagination, counting, etc.
Merge branch 'browse'
Remove keyword.js model
Use the root readme if no readme on the latest version
Redirect /keyword/foo to /browse/keyword/foo