Privacy: correct field name on list save

A wrong field name was used here (propably due to refactor)
Caused "block elements" not to be saved.
Privacy: rename parameter block -> blocked

The field of `item` is already called "blocked" instead of "block" -- it seems that name was changed at some point and this occurrence was forgotten.

Also fixes a double period ("Order of rule.." -> "Order of rule.")
Merge pull request #1 from lucaswerkmeister/patch-2

Privacy: rename parameter block -> blocked
Merge pull request #8 from yellowant/patch-1

Privacy: correct field name on list save