INTSAMPLES-127 Polishing

- PR Comments
- Switch to Jackson2
- Fix oxm config

Polishing

INTSAMPLES-127 Update to SI 4.0.0.RC1

INTSAMPLES-127 Remove Servlet Dependency

travel sample; see INT-3350.

INTSAMPLES-127 Update Samples to SI 4.0.0

JIRA: https://jira.spring.io/browse/INTSAMPLES-127

Created `maint` branch for ongoing SI 3.0.x samples.
si4demo Spring Integration 4.0 Demo

https://spring.io/blog/2014/05/15/webinar-replay-spring-integration-4-0-the-new-frontier
INTSAMPLES-122: Migrate to Gradle

JIRA: https://jira.springsource.org/browse/INTSAMPLES-122

INTSAMPLES-122: Polishing

INTSAMPLES-122: Add generated poms

* Upgrade some dependencies

INTSAMPLES-122: Cover Java/DSL sample

INTSAMPLES-122: Upgrade to SI 4.0.1 & SF 4.0.5

INTSAMPLES-122: Polishing according PR comments

Make gradlew executable
Increase `FileProcessingTest` timeouts
`AC.close()` in file and ftp tests
Fix `FileProcessingTest` configs

`Caused by: org.springframework.integration.MessageDispatchingException: Dispatcher has no subscribers`
Add Eclipse bin/ Directory to .gitignore
INTSAMPLES-130 Fix Eclipse WTP for Web Samples

JIRA: https://jira.spring.io/browse/INTSAMPLES-130

Enable `Run As | Run on Server ...` when using eclipse.

The wtp config was lost when the samples were converted
to gradle.

Upgrade to SI-4.0.2 and Boot 1.1.0.RELEASE
Polishing according upgrading
Upgrade to SI Java DSL M2
INTSAMPLES-131: Fix `README.md` for Gradle

JIRA: https://jira.spring.io/browse/INTSAMPLES-131

INTSAMPLES-131: PR comments
Comment out the Oracle Driver dependency

CI Build: https://build.spring.io/browse/INTSAMPLES-NIGHTLY-1053/log
Update to Spring Integration 4.0.3
INTSAMPLES-133:Use <int:handler-retry-advice/>

Update the retry-and-more Sample to use <int:retry-advice/> Syntax

Polishing - add info to README.

Also, use "localhost" for amqp connection factories.