Test, Javadoc Cleanup

* Remove an unnecessary test.
* Fix timing in header channel registry test.
* Fix Javadocs in VetoCapableInterceptor
INT-3343 Bump JSch, Hibernate Versions

JIRA: https://jira.spring.io/browse/INT-3343
Add Bamboo Status to README
INT-3342 Allow Custom TypeLocator for SpEL

JIRA: https://jira.spring.io/browse/INT-3342

Allow customization of the `TypeLocator` used by SpEL
`EvaluationContext`s throughout the framework.
INT-3337: `MongoDbMessageStore` refactoring

JIRA: https://jira.spring.io/browse/INT-3337

* Introduce `MessageReadingMongoConverter` (similar to `MongoDbMessageStore.MessageReadingMongoConverter`)
* Change tests to use `ConfigurableMongoDbMessageStore` with `MessageReadingMongoConverter`
INT-3337: Addressing PR comments