Architectural Nuisance 1

[mnzaki]

Description

First the easy and relatively clear bits.

TODO

• Export an explicitly public interface directly from 'jolocom-lib' #343 Export an explicitly public interface directly from 'jolocom-lib'
• Cleanup JolocomRegistry creation #356 Cleanup JolocomRegistry creation
• Don't mutate input objects #315 Don't mutate input objects
• Decouple identityWallet from registry
  • Consolidate validation logic #357 Consolidate validation logic into one place
  • Create new payment interface to decouple sendTransaction from identityWallet