springboard almost works

springboarding happens infinitely because of build ids

have to manually bootstrap a tropohouse

fixed some other things:

 - store package server token in correct domain
 - copy files (eg packages pre-publish) with +x flags
 - catalog.getReleaseTrack works
 - don't pass release to uniload (Meteor.release will always
   end up 'UNILOAD')
 - fix building meteor-tool again
 - stop supporting apps without .meteor/release
 - merging unipackages with tools works

springboarding to warehouse releases totally not supported