L20n/Features/Relative referrals

goal

simplify referencing attributes and value of the entity from within the entity.

example

<shutdownCmd "Close the app"
  title: "In order to close the app press ctrl+{{ ~..command }}"
  command: "w">

<brandName "Firefox"
  title: "This is {{ ~ }}">

status

• stas - ok
• gandalf - ok
• pike - ok