MA-36 Develop MOTECH Batch module

This is a merge of the dev/batch branch.

This commit adds the motech-platform-batch module

Change-Id: I56edd14d4aee5b832e4eb01d21683478b7e364da
sql properties from bootstrap
can remove storing batch-jobs in custom folder
Merge branch 'master' into dev/batch

Conflicts:
	batch/src/main/java/org/motechproject/batch/service/JobTriggerService.java
	batch/src/main/java/org/motechproject/batch/service/impl/JobTriggerServiceImpl.java
	batch/src/main/java/org/motechproject/batch/util/BatchConstants.java
	batch/src/main/resources/META-INF/motech/applicationBatch.xml
	batch/src/main/resources/baseContext.xml
	batch/src/main/resources/beanRefContext.xml
	pom.xml