Fixed UnrecognizedPropertyException.

Exception in thread "main" com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "database" (class com.example.helloworld.HelloWorldConfiguration), not marked as ignorable (5 known properties: , "server", "template", "databaseConfiguration", "defaultName", "logging"])
 at [Source: N/A; line: -1, column: -1] (through reference chain: com.example.helloworld.HelloWorldConfiguration["database"])
Merge pull request #322 from zhongl/patch-1

Fixed UnrecognizedPropertyException.
Switch to LocalDateTime for JerseyIntegrationTest.

Hopefully helps with #320.
Switch back to DateTime, but pinned to UTC.

Hopefully helps with #320.
More futzing with time zones.

I hate #320.
Definitely hating #320.
Give admin connectors a separate thread pool.

Also, add some documentation.
Fix initial size warning w/ dw-migrations.
Move example to HSQLDB.
Allow for TemplateException mapping.
Update release notes.

Yeesh.
Make sure we still nag about healthchecks.
Some minor fixes.
Additional documentation.
Optimized imports.
Added tests for AdminEnvironment.
Tidying.
Formatting fix.
Upgrade to Jackson 2.2.1.
Fix usage of deprecated jackson-yaml code.