Improved Auth related module implementation by having a way to change settings like token, max age.
- use CMS_SETUP.site_id and related "auth.$module.token" ... configuration values.
- removed related CMS_..._CONSTANTS classes.
For auth session module, use auth_session as table name, and use VARCHAR(64).
Extracted sql from blog module, and store it under site/scripts/install.sql .
Renamed a few $modulename.sql as install.sql
Now, all formats used by CMS are instances of CMS_FORMAT, mainly to prepare the admin section in order to define format by config/database.
CMS_NODE_API provides all queries to access the content types, and formats, this way a module can easily alter the formats by adding a new filter.
TODO: see how to integrate permission checking, to control who can use a specific format (such as full HTML).
