Merge pull request #221 from raistlinthewiz/develop

Initial payment processor work - still not complete though.
Merge pull request #223 from raistlinthewiz/develop

more payment processor work & testing .net 4.5 targeting with mono
Merge pull request #225 from raistlinthewiz/develop

Downgraded back to .net 4.0.
Merge pull request #227 from raistlinthewiz/develop

More ExecutePayments() work.
Merge pull request #229 from raistlinthewiz/develop

Implemented payment to miners - though it still doesn't consider the existing balances.
Merge pull request #230 from raistlinthewiz/develop

PaymentProcessor done, improved extranonce and a tiny job not found error.
Merge pull request #235 from raistlinthewiz/develop

Implemented a very basic frontend with nancyfx
Implemented /pool page.