Refrain from removing conflicting IDs until save
Refrain from removing conflicting IDs until save

Create a "conflict" flag that is set when the cookie's Final ID doesn't
match a game in the database belonging to the currently-logged-in user.

If a save is attempted with the flag set, only then remove the IDs.

steve-mcclellan/j-scorer,steve-mcclellan/j-scorer,steve-mcclellan/j-scorer