LAC-51 added new logging configurations
LAC-9: add functionality. Old dao is used
LAC-9: member can push one's data
LAC-9: Add almost all
LAC-58: prepare entities for algorithm. Rename some commands. Also, by Bogdan: make KeyDAO and NodeDAO to be singletons
LAC-9: rewrite merge operation
LAC-9: Add modes, also many small improves
LAC-46: CRUD operations removed from WEB to EJB
LAC 46: merging changes