De-uglified some code and moved two API classes.

api/net/sf/briar/api/transport/BatchConnectionFactory.java

api/net/sf/briar/api/transport/StreamConnectionFactory.java

...ents/net/sf/briar/transport/ConnectionDispatcherImpl.java

.../sf/briar/transport/batch/BatchConnectionFactoryImpl.java

...net/sf/briar/transport/batch/IncomingBatchConnection.java

...net/sf/briar/transport/batch/OutgoingBatchConnection.java

...ts/net/sf/briar/transport/batch/TransportBatchModule.java

...nents/net/sf/briar/transport/stream/StreamConnection.java

...f/briar/transport/stream/StreamConnectionFactoryImpl.java

...f/briar/transport/batch/BatchConnectionReadWriteTest.java