ENH: Add JsonContext.toJsonPretty() ... for pretty JSON output of beans and lists of beans

[rbygrave]

This is expected to be used mostly for testing, asserting fetched beans in pretty json form against expected content.

Looking to add a helper method to ebean-test to get pretty json of bean(s) with the option of replacing fields (like id and timestamp fields) for assert equals purposes.

[rbygrave]

    String listAsJson = DB.json().toJsonPretty(list);

    String beanAsJson = DB.json().toJsonPretty(bean);