Added ActionFileLink field to Actions table
Added ActionFileLink field to Actions table

* The addition of this optional field to actions eliminates the need
for many additional subclass tables for various ActionType (mostly in
other schemas).
* Modified diagrams slightly to accommodate the longer Action table.
* Also modified the comment for a few “Description” fields, to  remove
the word “Note”.

ODM2/ODM2ControlledVocabularies,ODM2/ODM2ControlledVocabularies,miguelcleon/ODM2