Document contract log monitoring process

[RavenDream]

We need to watch the contracts logs frequently to detect successful attacks.

Some attacks do not have a time delay before taking effect, such as the following.

1. Steal owner key
2. Change implementation address.
3. Adjust balances and allowances in the eternal storage contract.
4. Change implementation address back to original (totalSupply is now wrong).
5. Request withdrawal of funds into fiat.

Consequently attack detection scripts must be run before each and every fiat coin operations transaction that touches the real world in addition to regular intervals.