Recursive data packages update on a resource change

[roll]

Overview

Currently, if we independently update an individual file's metadata (opening a file with no package context), it won't affect data packages that are already created and include this resource. This problem's root is that Data Package usage creates metadata duplication with Open Editor's metadata system, it's a factor that we probably can't do anything with (otherwise it will be non-stadard data packages) -- we just need to have a synchronization system

[romicolman]

See also issue #306