* add batch job strategy interface
* update plugin loaders
* remove comment
* make map async
* ensure that only one of each strategy is registered
* register strategies plural
* add identifier and batchType properties
* extend batch job strategy identification method
* initial test
* update loaders to accomodate different ways of accessing batch job strategies
* identifier batch type field
* redo merge in plugins
* update interface and load only js files
* use switches instead of elif
* remove comments
* use static properties for strategy registration
* update tests
* fix unit tests
* update test names
* update isBatchJobStrategy method
* add check for TransactionBaseService in services for plugins
* update interfaces export
* update batchjob strategy interface with a prepare script
* update loaders
* update batchjob strategy interface
* remove everything but public interface methods from batchJobStrategy
* add default implementation to prepareBathJobForProcessing
* remove unused import
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