Service Portal Pages and Themes

widget-coherence covers the inside of one widget — server script, client controller and HTML staying in step. This covers everything around it: the page the widget sits on, and the theme the page renders in.

The hierarchy

sp_portal      one portal. Has a URL suffix ("sp"), a homepage, and a THEME.
  └── sp_page       a page, addressed by its stable `id` → /sp?id=<id>
       └── sp_row        a row in the page layout
            └── sp_column    a column in that row (12-column grid)
                 └── sp_instance   ONE PLACEMENT of one widget, with its options
                      └── sp_widget    the widget definition, shared by every instance

The two things to hold onto: