Fix ExecutionManager.getTasksWithAllTags signature

- Use Iterable<?> instead of Iterable<String> for parameter type
Use entity proxy, rather than direct entity ref

- Adds EntityManager interface
- Adds ApplicationBuilder as a tailored interface for defining apps
- Adds Recipe for defining an entity to be created
- Adds entityManager.createEntity(Recipe) for creating new entities
- Adds EntityProxy (a dynamic proxy for calling entities)
squash with "big changes"
fixing tests
converting TomcatServer
Rename