Salvation should use "old dps calculation"

Since salvation ('XAB2307') has split projectiles, it should be in [this list](https://github.com/FAForever/spooky-db/blob/master/app/js/UnitDecorator.js#L303), as the current calculation means the dps number displayed on [its database entry](https://faforever.github.io/spooky-db/#/XAB2307) is 1/36th of the value.
(7920 damage every 3.1 seconds is much more than 70.97 dps).
The other units with splitting projectiles are all in the `special` list.