Include word counts in JSON export (fixes #316)

trans/views/api.py

@@ -233,9 +233,11 @@ def export_stats(request, project, subproject):
             'code': trans.language.code,
             'name': trans.language.name,
             'total': trans.total,
+            'total_words': trans.total_words,
             'last_change': trans.get_last_change(),
             'last_author': trans.get_last_author(False),
             'translated': trans.translated,
+            'translated_words': trans.translated_words,
             'translated_percent': trans.get_translated_percent(),
             'fuzzy': trans.fuzzy,
             'fuzzy_percent': trans.get_fuzzy_percent(),