Define new accesor Eraser and includes some improve on debug traces
For now on dbms::Database will no need a instance of app::Application to run
Merge branch 'dbms_without_app' into persistence_erase_create
If there is not app::Application then database will initialize trace system
Avoid dbms::Database links with DummyApplication
Improve cleaning of dbms::Database
More traces
Small detail en asString
Improve trace information
Defines new Creator and Eraser accessors
Merge branch 'persistence_erase_create' into develop