Added support for custom value stored in CMS_STORAGE.
Added optional css classes addition to CMS_BLOCK output.
Refactored storage, to manage node from node module code only (or mostly).
TODO: improved view for a cms node, for now hardcoded.
Implemented role and permission storage.
Introduced the CMS_PARTIAL_NODE and CMS_PARTIAL_USER.
Added support for node storage extension
- storage of data specific to each node content type,
- in addition to the core CMS_NODE)
- For now, only implemented for SQL storage.
Note: in current version, CMS_PAGE support is hard coded in the core,
(as opposed to be only supported by the node module.)
Commented/removed for now, the Web API code to update node summary, title, via REST request.
