Usability: Anyhow show why a user does not see projects (in some scopes) and document when user does not see tasks resp. how to change this (in the future also show needed qualifications)

[volontarian]

E.g. if you don't set foreign languages und /users/:user_id/edit (Settings) you don't see stories with tasks:

class Product::TextCreation::Story < Story
  ...

  def self.for_user(user)
    active.where(:language.in => user.languages)
  end

 ...
end