Fix a bug in UI that prevented the order progress to be updated

The order progress, represented by a double value, was converted into string
and the shown. That caused the UI to show only 0% and 100% values.
Merge pull request #82 from sortega/integration_fix

Fix exchange completion notification
Merge pull request #81 from apoloval/bugfix/damned-int

Fix a bug in UI that prevented the order progress to be updated
Add a main class to okpaymock
Configure Akka to use SLF4J as logging API

This makes possible to configure the loggers and appenders using Logback.
Generate standalone JAR and DEB for okpaymock
Configure logging for test and daemon modes
Enable UPNP protocol in `ProtobufServerActor`

This makes possible to connect to a broker from a NAT network with private
addressing.
Merge pull request #84 from apoloval/bugfix/tommy-nat

Enable UPNP protocol
Use the new DNS
Merge pull request #83 from sortega/okpaymock

Package okpaymock
Implement a OKPay mock backoffice console

Using the facilities of SBT, we can provide a utility object in combination with
some imports to open a Scala console in the `okpaymock` module that allow you
to connect, create new accounts and retrieve the balances using the backoffice
API.
Add some instructions for OKPay console in `README.md` file
Merge pull request #85 from apoloval/okpaymock-cli

Implement a OKPay mock backoffice console