#95 Subscription state not updated in cache

[Dieter Wimberger]

When subscribing or unsubscribing a folder from the
respective list, the cached subfolder list is not
updated to reflect the change in subscription state.
Although the change is performed on the store, for the
user it will appear that it has not happened.

[Dieter Wimberger]

Logged In: YES
user_id=36782

Quick Fix added. Will be available with the next commit.