Fixes #158 - Set default buttons in KeePassRPC (KeeFox) Options dialog;
Fixes #157 - Don't insert KeeFox tutorial samples on database upgrade (unless they were already present);
Fixes #156 - Don't save KeePassRPC JSON field in every edited entry
Fixed problem where kdbx files with no KPRPC strings were not accessible from KeeFox;
Failed KPRPC authentication due to a version mismatch will now trigger ongoing monitoring for changes to KeePassRPC.kdbx;
If a change to KeePassRPC.kdbx is found by the monitoring, the user is warned that they need to restart KEePass before the new KeeFox version will work;
1.2.1b1