Changements

Add gs-security-model and gs-security projects
 (commit: 20f428c)

Add @PasswordGeneric annotation and beginning of password creation in
gs-reactor
 (commit: e253bd0)

Improve password creation and edition features
Replace @PasswordGeneric with @Hidden annotation, and add the Salt
attribute in gs-security-model rather than creating it automatically.
 (commit: ee3f946)

gs-reactor: Beginning of admin and user modes in applications
 (commit: d863a18)