Transfer only to whitelisted Accounts and trade only with whitelisted Assets

As a user with security concerns I would like to secure my additional accounts by limiting the ability to transfer tokens only to whitelisted accounts. Additionally, I would like these accounts to be able to exchange tokens only for whitelisted tokens

Two new policy mode:

* TRANSFER FUNDS TO WHITELISTED ACCOUNTS ONLY (Allow ALL by default)
[comma separated list: eg. my-bot-1, my-bot-2, my-primary-account-1, my-primary-account-2]

* TRADE WITH WHITELISTED ASSETS ONLY (Allow ALL by default)
[comma separated list: eg. BTS, bitUSD, bitCNY]

whitelist can only be managed by the Account Owner (OWNER Priv Key).
Such permissions would have to be given separately for each ACTIV key (if there are more than 1)

if ACTIVE key get compromised by the hacker, He would by able to "bad trade" on defined trading pairs and he will not be able to transfer funds to account other then whitelisted

The issue names no files, tests, or entry points. Start by locating the existing policy modes and authorization paths for transfers, trading, account ownership, and active keys. Done means owner-managed per-active-key whitelists restrict transfers and traded assets while preserving the stated allow-all defaults.

Written by the indexing model from the issue text.