Extracted a not-so-happy case from HappyPathHandshakeActorTest

This (I thought) will avoid a heisenbug reproduced when jenkins is 
under heavy load.
Merge pull request #90 from sortega/bugfix/69-heisenbug

Extracted a not-so-happy case from HappyPathHandshakeActorTest
Fix seller's fund commitment amount
Minor style fixes
Implemented Okpay client using ScalaXB.
Merge pull request #91 from gotoalberto/scalaxb

Implemented Okpay client using ScalaXB.
Use getCurrencyCode instead of getSymbol

And clean up style
Merge pull request #92 from edrevo/fix-seller-deposit

Fix seller deposit
Merge pull request #94 from sortega/bugfix/okpay

Use getCurrencyCode instead of getSymbol