JIRA: https://jira.spring.io/browse/INTSAMPLES-138
* Upgrade to Boot 1.2, which is based on the SI 4.1
* Upgrade to SF 4.1.1
* Fix `feed` sample to use new `Rome` dep. from SI
* Fix deprecations for `@Payload`, `@Header` etc.
* Fix mongo` sample deprecation warn
* Sample supports Hibernate, EclipsLink and OpenJPA
* Sample uses Spring 3.1 (Profiles)
* Retrieves a list of records
* Creates a new DB record
INTSAMPLES-62 Code Review Fixes
* Use Log4j
* Fix dependencies
INTSAMPLES-62 - Make JPA Sample compliant with INT-2601
* Fix whitespace issues
* Make sure all schemas are version-less