fix for int(None) in __nonzero__

mentoring/light_children.py

@@ -260,7 +260,7 @@ class Integer(LightChildField):
     def __nonzero__(self):
         try:
             int(self.value)
-        except ValueError: # not an integer
+        except TypeError, ValueError: # not an integer
             return False
 
         return self.value is not None

mentoring/public/css/questionnaire.css

@@ -82,7 +82,6 @@
 .mentoring .mrq-attempts {
     display: inline-block;
     vertical-align: baseline;
-    margin: 8px 0 0 10px;
     color: #777;
     font-style: italic;
     webkit-font-smoothing: antialiased;