(Feature) add Registry contract

[vbaranov]

Relates to migration to Auth-os Proxy #957

Problem: Auth-os cannot track how many crowdsales are created by using proxy. Thus, we cannot retrieve all users' crowdsales to give users access to management page and we cannot get all crowdsales to show statistics.

Solution: Create registry smart-contract, that will track all crowdsales created by Token Wizard.

Specification of registry smart-contract:

1. It should track every crowdsale created by token-wizard, crowdsale type and address of the owner.
2. It shoud return the total amount of minted capped crowdsale
3. It should return thr toal amount of dutch crowdsales
4. It should return the total amount of crowdsales created by user.

[vbaranov]

Link to the implementation: https://github.com/poanetwork/auth-os-applications/blob/master/TokenWizard/crowdsale/MintedCappedCrowdsale/contracts/ProxiesRegistry.sol