Process address book updates incrementally

- No longer invalidates selection model, thus retains selection on address book changes
- Fixes selection of new address when added

src/qt/walletmodel.h

@@ -145,7 +145,7 @@ public slots:
     /* New transaction, or transaction changed status */
     void updateTransaction(const QString &hash, int status);
     /* New, updated or removed address book entry */
-    void updateAddressBook(const QString &address, const QString &label, int status);
+    void updateAddressBook(const QString &address, const QString &label, bool isMine, int status);
 };