qt: add proxy to options overridden if necessary.
qt: add proxy to options overridden if necessary.

If proxy is disabled in the gui but enabled via the command line, it needs to
be added to the override list.

(cherry picked from commit 27c3e91014d65091b096b97680b95d1b130a284d)

reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin