Fixed typo.
Server modes.
Refactor persistence library.
Added a persistence speficication cluster and implementation cluser,
Implementation MySQL.
Added test cases for mysql implementation.
Updating loging messages on USER and NODE provider.
Added test cases to node provider.
Update CMS_STORAGE interface.
Added test cases.
Added a common database backend implementation.
Added sqlite (proof of concept)
Update API to use CMS_STORAGE
Updated navigation templte to include current user.
Updated CMS_NODE, CMS_USER.
Added USER_PROFILE and USER_ROLE
Updated new USER_DATA_PROVIDER and NODE_DATA_PROVIDER to support new features.
Added ROLE_DATA_PROVIDER.
Updated test cases.
Updated MySQL database schema.
Updated Database Query error handling.
Add support for user profiles.
Updated test case.
Added node collaborators, author.
Added test cases.
Updated MySQL database script
Updated database script.
Database Node support versions and editor id.
Updated NODE_DATA_PROVIDER with new features.

collaborator_nodes: Possible list of nodes edited by a given user id as collaborator
author_nodes: Possible list of nodes of a given users as creator of them.

Updated test cases
Updated CMS_STORAGE interaface.
Updated CMS_STORAGE interface.
Added test cased for MySQL implementation.
Updated Example (API) to use the new CMS_STORAGE interface.