bridge: add setMarshallingProperties; a lightweight alternative to setMarshallingDescriptor

For an object it just whitelists properties, and for Error / Function objects it
allows whitelisted properties to be sent (by default properties on these
objects are ignored).
seed: limit uploaded app size (10mb for now)
seed: use @bridge.setMarshallingProperties to improve @auth.isAuthenticationError
build fixes
added missing build script
@nodoc
server/file-server.sjs now consistently uses Streams/Arrays
Removing mho:server/formats/Jsonp
Fixing build error
raft consensus algorithm. wip
don't document raft for now
move mho:server/storage to mho:flux/kv/leveldb
first cut at flux kv store api
bump sjs version
doc fixes
lib index file
more doc fixes
change order of mechanism execution to preorder, as this allows parent elements to establish a 'context' that child nodes can resolve in their mechanisms
Convert imports to alt namespace.
make surface/html module safe for use on server-side