INTSAMPLES-134: SFTP: Use Apache SSHD SshServer

JIRA: https://jira.spring.io/browse/INTSAMPLES-134

INTSAMPLES-134: `sun.misc.BASE64Decoder` -> `org.apache.sshd.common.util.Base64`

INTSAMPLES-134: PR comments and fix for Windows

INTSAMPLES-134 Test Samples with Remote Server

- change 'user' property to 'username' to avoid conflict with environment variable.
- create temporary files using the remote file template in 'si.sftp.sample'.
- clean up after test completion.
- use a caching session factory.
INTSAMPLES-132 AMQP Publisher Confirms/Returns

JIRA: https://jira.spring.io/browse/INTSAMPLES-132

Polishing - PR Comments
TCP Sample - Use <o-t-s-t />

Replace expression-based transformers with <o-t-s-t/> now that
it can handle `byte[]`.
INTSAMPLES-136 Async GW Promise/ListenableFuture

JIRA: https://jira.spring.io/browse/INTSAMPLES-136

Polishing - PR Comments

* Add `compile "org.projectreactor.spring:reactor-spring-context:$reactorSpringVersion"` dependency
to show a usage of `@EnableReactor`
* Make `async-gateway` project Java 8 compatible and replace inline implementations for callbacks to Lambdas
INTSAMPLES-135: DSL Cafe Demo Sample

JIRA: https://jira.spring.io/browse/INTSAMPLES-135

Conflicts:
	gradle.properties

Upgrade version: Boot 1.1.5, SI 4.0.4, DSL 1.0.0.M3, SF 4.0.7
SpringOne 2014 XML to @Config (A-E)

AXML thru EDSL.

FMail is the same as EDSL with placeholders

GIMAP is empty
SpringOne 2014 @Config to DSL (E-G)
SpringOne ReadMe Updates
Fix `si4demo` issues
INTSAMPLES-137: Add WebSockets sample

JIRA: https://jira.spring.io/browse/INTSAMPLES-137

Depends on https://github.com/spring-projects/spring-integration/pull/1274

Polishing and cleanup

* Fix `cafe-dsl` project: https://build.spring.io/browse/INTSAMPLES-NIGHTLY-JOB1-1131
* Change author emails to the `pivotal.io`
* Regenerate poms

Fix for `Cafe-DSL` sample

https://build.spring.io/browse/INTSAMPLES-NIGHTLY-JOB1-1143
INTS-137: Add STOMP Chat Application

JIRA: https://jira.spring.io/browse/INTSAMPLES-137

* Upgrade to Boot 1.1.7
* Fix several Boot apps to get deal with `args`, e.g. `--debug` option can be useful for Boot
* Provide a loca copy for JavaScript files (`sock.js` and `stomp.js`) to avoid extra Internet connection on testing

INTS-137-2: Make JavaScript cross-browser

Some additional polishing to the server config, like `logging-channel-adapter` for server message flow