Delete dev account

[rimutaka]

Deleting the entire account should be easy and irreversible. No backups, no leftovers.

stackmuncher --nuke should delete all the data related to the account from:

• S3
• PG
• ES

Deleting traces from logs would be a bit too hard at this stage. They are not kept past a few days anyway. It would be really hard to correlate any requests once the DB is gone because everything is just hashes that mean nothing.