Page content handling #6

Maybe relates to #2,

Regarding CMS > Page Content:

• When an API code is renamed, the associated file is not.
• Files are generated only when the CMS page is saved, include more generation points.
• API Code should be unique to global or the page OR include a check when auto generating blocks
• If two identical page content objects are created with the same code: deleting one will delete the others file…