====== Taxonomy_context option block ======

  * TC defines one optional block for each vid
  * Currently, considering a vocabulary structure like:

<code>
  tid1
  tid2
    tid21
    tid22
      tid221
      tid222
    tid23
  tid3
</code>

  * if tid22 is selected as expanded, and if I'm not mistaken, the module will display a block like:

<code>
  tid1 class="collapsed"
  tid2 class="collapsed"
    tid21 class="collapsed"
    tid22 class="expanded"
      tid221 class="collapsed"
      tid222 class="collapsed"
    node titles filed under tid22, themed using theme('taxonomy_context_nodes')
    tid23 class="collapsed"
  tid3 class="collapsed"
  node titles filed under tid2, themed using theme('taxonomy_context_nodes')
</code>

The question is: is this correct ? and if not, what should it look like ? Note that this behaviour is themeable using theme_taxonomy_context_children_list