Returns whether the player can reset instances. Used to determine whether to display the "Reset Instance" option in the unit popup menu for the player.
Only instances to which the player is not saved may be reset (i.e. normal 5-man dungeons, not heroic dungeons or raids), and only by a solo player or group leader.
See also Instance functions.
Signature:
canResetInstances = CanShowResetInstances()
Returns:
canResetInstances- 1 if the player can currently reset instances; otherwise nil (1nil)