Added OAuth2 GMAIL loggin/logout support.
Added OAuth2 Gmail filter.
LoginModule
Updated LoginModule with OAuth2 Gmail support.
Persitence
Extended user persitance api with OAuth2 gmail features.
(TODO refactor persistance as an user extention)
-- The module handle basic_auth (at the moment).
-- Handle login, logout, register user, activate/reactivate an account, password recovery.
-- Send notification emails.
CMS Updates
-- Added a new service: email.
-- Updated Basic Auth Module to handle logout based on the browser type.
-- Updated persistence layer to save and remove and query activation token and password token.
-- Updated CMS_USER to handle status {active, not_active, trashed}.
-- Updated MySQL scripts to be in sync with SQLite scripts
