Temporary hack so that cache sets are performed whenever save() is called,

regardless of commit flag. Without this, the file upload progress bar breaks
because it gets a stale File object out of the cache.

Eventually, it would be better if cache sets were only done condittionally
based on commit flag, and also whenever Database.commit() is called.

controller/Database.py

@@ -72,8 +72,12 @@ class Database( object ):
 
     if commit:
       connection.commit()
-      if self.__cache:
-        self.__cache.set( obj.cache_key, obj )
+
+    # FIXME: we shouldn't touch the cache unless there's actually a commit.
+    # the problem is that in self.commit() below, we don't know which objects
+    # to actually save into the cache
+    if self.__cache:
+      self.__cache.set( obj.cache_key, obj )
 
   def commit( self ):
     self.__get_connection().commit()