Reincarnation costs lowered

[idles]

The cost of reincarnation was lowered in four ways:

* There is a maximum cost of reincarnation, around 30M exp
* If you reinc again within an hour (used to be 30mins), the cost is very low
* The penalty for reincing within a few days of the first reinc is now lower
* The benefit for waiting over a month to reincarnate was increased