Adding Latest function to the core

Signed-off-by: Artemis44 <nichols.philippe@gmail.com>
Nettoyage de la classe et ajout d'un prefix de parallelisme
Nettoyage dans CimDAO.java
Major Fix : Decoupled the connection and treatment of the different queries.
Major Fixes : reorganized the doGET, calling  getters for data on init
Minor Fix: modified behaviour and removed comments
Major Fixes: decoupled method getClassTree from query. Removed the todos. Added/removed necessary variables

Signed-off-by: Artemis44 <nichols.philippe@gmail.com>