Use in-memory counters for generating ids/accounts/etc

[vdrg]

Instead of using storage for things such as generating "random" json ids, we can probably use something in memory so we can mark those functions as pure/view. To simplify things, we could use a global in-memory counter for this as a randomness seed.

[vdrg]

this might not be possible

[vdrg]

yup I can't see a way of doing this