added support for boolean in mencode and serialization utility

Ignore-this: 8ca790786f72bd36786a04aae5e4efdc

darcs-hash:20141013044610-c21fe-d1f37eb738c26ad385ff6c057e5e3166d78d6c8c
converted conversation service to use new serialization and message utilities

Ignore-this: 786c5c8d90d569ef8d9b9a5f71d73e1f

darcs-hash:20141013044836-c21fe-84cf53d02f2916576259ffcb2c98c2e1cf6b3cb1