update to liquibase 3.0.4
Merge pull request #392 from kutzi/liquibase-3.0.4

update to liquibase 3.0.4
Upgrade to Metrics 3.0.1.
Upgrade H2.
Upgrade Objenesis.
Upgrade to Jetty 9.0.5.
Upgrade to Jackson 2.2.3.
Upgrade to httpclient 4.3.
Upgrade to Hibernate 4.2.5.
Upgrade to Joda Time 2.3.
Upgrade to Guava 15.0.
Update relnotes.
Move from com.codahale to io.dropwizard.

I registered the dropwizard.io domain the other day, and it should be
the new home for Dropwizard. This should make it easier for me to build
out better governance around the Dropwizard project.
Trim some crap.
Fix GitHub links.