[O] Taskjuggler export deals badly with first parent match

[Baptiste]

Hi,

first of all, thanks for the hard work to make 8.0 get out.

I found ox-taskjuggler broken in /task_id/ identification when it is non 
trivial.

here is an example this is not fine at my side

: Org-mode version 8.0 (release_8.0-1-g5ef07d @ …)

#+BEGIN_EXAMPLE
* Project                                               :taskjuggler_project:

** Training material
   :PROPERTIES:
   :task_id:  training_material
   :END:
*** Markup Guidelines
    :PROPERTIES:
    :Effort:   2d
    :task_id:  markup
    :END:
*** Workflow Guidelines
    :PROPERTIES:
    :Effort:   2d
    :END:
** Presentation
   :PROPERTIES:
   :Effort:   2d
   :BLOCKER:   markup
   :END:
#+END_EXAMPLE

At export, it gives

#+BEGIN_EXAMPLE
task project "Project" {
  purge allocate
  allocate cancelled
  task training_material "Training material" {
    task markup "Markup Guidelines" {
      effort 16.0h
    }
    task workflow "Workflow Guidelines" {
      effort 16.0h
    }
  }
  task presentation "Presentation" {
    depends !!training_material.markup
    effort 16.0h
  }
}
#+END_EXAMPLE

which fails compiling (for good reasons) with
:  Error in scenario plan: Task project.presentation has unknown depends 
training_material.markup

actually, the line
:     depends !!training_material.markup
should be
:     depends !training_material.markup

– this is an easy fix is this baby example, but on my whole project, I have 
tons of false references :'( –

again, thanks :)

--

: ~^v^~ Bat