No admin interface for private vocabulary id

This module uses the variable taxonomy_context_tabs_vocab to find out the vacabulary to use for generating buttons. However this variable doesnt have a corresponding admin interface. Because of this it uses the default vocabulary id of 1 to display the top level buttons for the site navigation.

function taxonomy_context_get_buttons() {
  $buttons = array();
  $context = taxonomy_context_get_context();
  if(variable_get("taxonomy_context_buttons_vocab", 1)) {
    $tids = taxonomy_context_vocab_first_child_terms(variable_get("taxonomy_context_tabs_vocab", 1));

If you have a number of vocabularies, and the one you want to use for showing taxonomy_context is not the first one, this functionality of showing buttons would fail.

Solution(any of the following):

• Add the required form field for this variable.
• Use the variable summary_vocab_id instead.
• Add the field manually in the database.