[zeditor] Enemy map data not reset when resetting all enemy data.

Steps to recreate:

1. File->New
2. Click the Screen Enemies panel in the bottom left of the editor.
3. Double-click a "(None)"
4. Double-click "Aquamentus (Facing Left)"
5. Click OK to dismiss Enemies window
6. Observe Aquamentus (Facing Left) is now in the Screen Enemies panel.
7. Quest->Defaults->Enemies
8. Click 'Yes' to Reset all enemy/NPC data.
9. Observe Aquamentus (Facing Left) is still in the Screen Enemies panel.

Consider rewording the msgbox to say enemy map data will not be reset and dropping the word "all."

The "Reset all enemy/NPC data?" string is passed to jwin_alert from onDefault_Guys() in zquest.cpp