[enh] Update features with new i18n config keys.

sites/all/modules/custom/ffdn_article/ffdn_article.features.taxonomy.inc

@@ -18,6 +18,8 @@ function ffdn_article_taxonomy_default_vocabularies() {
       'weight' => 0,
       'language' => 'und',
       'i18n_mode' => 4,
+      'base_i18n_mode' => 4,
+      'base_language' => 'und',
       'rdf_mapping' => array(
         'rdftype' => array(
           0 => 'skos:ConceptScheme',

sites/all/modules/custom/ffdn_etude/ffdn_etude.features.taxonomy.inc

@@ -18,6 +18,8 @@ function ffdn_etude_taxonomy_default_vocabularies() {
       'weight' => 0,
       'language' => 'und',
       'i18n_mode' => 4,
+      'base_i18n_mode' => 4,
+      'base_language' => 'und',
       'rdf_mapping' => array(
         'rdftype' => array(
           0 => 'skos:ConceptScheme',

sites/all/modules/custom/ffdn_press/ffdn_press.features.taxonomy.inc

@@ -18,6 +18,8 @@ function ffdn_press_taxonomy_default_vocabularies() {
       'weight' => 0,
       'language' => 'und',
       'i18n_mode' => 4,
+      'base_i18n_mode' => 4,
+      'base_language' => 'und',
       'rdf_mapping' => array(
         'rdftype' => array(
           0 => 'skos:ConceptScheme',