`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