Extension ext-grade continued, a lot renames:

- All 'remove' renamed to 'do_delete'
- A lot 'change' renamed to 'do_edit', both renames will become important for
  the next full refacturing of all (list|edit|delete)_foo formulars to the XML
  based system
- Extension ext-grade continued, only a function-less script has been added
- TODOs.txt updated