Reactive Journal upgrade to version 0.9-AKKA-2.2.0-RC1-SNAPSHOT

[ironfish]

• Because ReactiveMongo has not upgraded to Akka 2.2.x yet we pulled and upgraded the source to Akka 2.2. These libraries are stored in Eligosource-snapshot repo until reactive is upgraded to Akka 2.2.x.
• The MongodbReactiveJournal now uses the ReactiveMongo 0.9 code base.
• Added 2 additional indexes to the ReactiveMongo journal for counter and replay.
• Added logging when a GetLastError encounters a failure.
• Changed connection.close to connection.askClose()
• Upgraded Embedded Mongo to current version for both the Reactive and Casbah journals.

Fixes #109

[krasserm]

Awesome, thanks a lot, Duncan!