Derive and load watched addresses outside of DB view.
Derive and load watched addresses outside of DB view.

There is no reason to load the transaction filter with watched
addresses while having a database view open the entire time.  Doing so
causes unnecessary database contention and memory usage.

jrick/dcrwallet,decred/dcrwallet,jrick/btcwallet,decred/dcrwallet,jrick/btcwallet,jrick/dcrwallet