Fix: get the actual key, not the cache key

Author: oliviersels

keyvaluestore/managers.py

@@ -12,11 +12,11 @@ def get_value_for_key(self, key):
 
         if not cached:
             try:
-                obj = self.get(key=cached_key)
+                obj = self.get(key=key)
                 cache.set(cached_key, obj.value)
 
                 return obj.value
             except:
                 raise KeyNotExistingException(_(u"The request key '%s' could not be found." % (key,)))
         else:
-            return cached
+            return cached