BATCHADM-177: Wrong StepExecutions displayed for partitioned jobs
BATCHADM-123: JSON response can not be parsed because of syntax exception
remove unused schemas
BATCHADM-179: Allow step and job execution context to be retrieved over the rest.
Updates for BATCHADM-179

* Update copyright dates
* Replace wildcard imports
* General formatting
* Utilize Errors object rather than logging
* Move ObjectMapper creation from class to bean
* Remove unused schema from manager-context
* Rename context.json end points to exection-context.json
* Add conditional check for stepExecutionContext in step/executionContext.ftl
* Remove redundant jobInfo/jobInfo.jobInstance conditional in jobs/executions.ftl
Bump Spring version to 3.2.9.RELEASE to match batch 2.2
Extend job instances view
BATCHADM-187: update copyright dates / minor tidy
Use SerializationUtils from Spring core
Update docs

* Migrate URL's to spring.io / spring-projects
* Minor spelling and config example changes
* Re-screenshot for updated views
BATCHADM-188: Update Spring Integration version to latest in the 3.x line
Updated build to get site generation working with Maven 3 and cleaned up some javadoc issues
Fixed javadoc issues
Updated dependencies
Updated batch version to be released version
[maven-release-plugin] prepare release 1.3.0.RC1
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release 1.3.0.RC1
[maven-release-plugin] prepare for next development iteration
[maven-release-plugin] prepare release 1.3.0.RC1