instantsend: optimize db and cache usage#3986

Merged

PastaPastaPasta merged 2 commits intodashpay:developfrom

UdjinM6:is_optim_4

Feb 24, 2021

Commits on Feb 20, 2021

instantsend: keep islocks cache when removing confirmed islocks from db
UdjinM6
committed
instantsend: Batched write/erase for connected/disconnected blocks
UdjinM6
committed