fixes the empty answer problem mentioned by David

ccpq/lib_ccpq.py

@@ -68,6 +68,8 @@ class Question(object):
         """needs quite some work"""
         if not isinstance(answers, list):
             raise TypeError
+        if len(answers) == 0:
+            return False
         right_answers = list(self._answers) # need a copy so we don't change for future questions
         for answer in answers:
             try: