ACT-1624 Replace getters and setters with Lombok @Getter @Setter

Example of how much code can be removed with the getters and setters of ```BpmnParse.java``` and ```TaskDefinition.java``` with ```@Getter``` and ```@Setter``` annotation.

**WARNING**: Before merge this, it's necessary install the [lombok](http://projectlombok.org/download.html) in the IDE to compile the code.