XD-2021 WebUI: Handle tooltip upon navigation

- Remove active `deployment status` tooltip when the stream/job
definition page is navigated outside.
XD-1953 - Update to Spring Batch Admin 1.3.0.RELEASE
Maven POM: update pivotal.io email
XD-1660: Add Zookeeper install script

XD-1660: Change start tip in install-zookeeper

XD-1660: Remove unnecessary code

XD-1660 Do not hard-code Zookeeper version

* Include basic ZooKeeper configuration file
* Polishing
XD-2023 Update to spring-data-hadoop 2.0.2.RELEASE

- modify build to allow version override for version in IO platform
XD-2029 Tuple: Use AlternativeJdkIdGenerator

- Instead of 3rd party library

- Followed pattern in MessageHeaders but did not include any easy
  way to change the default generator as in SI.
XD-2030 JobExecutions GET endpoint

- Set producible media type to `application\json` for
JobExecutions `GET` endpoints
  - `/jobs/executions`
  - `/jobs/executions?jobname=<jobname>`
Fixing whitespace/alignment issues in `build.gradle`
XD-2035 Exclude HealthIndicatorAutoConfiguration

- This will enable only vanilla health indicator to
be available for health endpoint
XD-2030 Fix job instances/step GET endpoints

 - Set producible media type for job instances/step GET
endpoints
  - /jobs/instances/{instanceId}
  - /jobs/instances?jobname={jobName}
  - /jobs/executions/{jobExecutionId}/steps
Update description of how to override rabbit settings in modules.yml

- sync ./spring-xd-yarn/site/config/modules.yml and ./config/modules/modules.yml
XD-2037 Log config locations

- Log XD server/modules config location and name

XD-2037 - rename message logged
Fixed typos in modules.yml
XD-1991 removed FATAL setting from log4j.properties
XD-2033 Moving ConnectionPoolSettings to own section
Pluralize xd config name in logging
XD-2038 Restore JDK6 compatibility

Avoid JDK7+ methods:
- Long.compare(x,y) in ZooKeeperContainerRepository
- Integer.compare(x,y) in ModuleDescriptor
- Collections.emptyIterator() in ChildPathIterator

Avoid this JDK7+ constant:
- PasswordUtils.UNICODE_CHARACTER_CLASS in PasswordUtils
XD-2025 Update config settings in spring-xd-yarn server.yml

- updating to match match current XD servers.yml

- moving ConnectionPoolSettings to own section

- adding a modules-config.zip as the module configuration option
Update README to 1.0 GA
XD-1799 - Fix ArrayIndexOutOfBoundsException in TwitterSearchChannelAdapter