Clarify concept of 'default network' in BitcoinModule
Rename BootstrapNode#{LOCAL_HOST => LOCALHOST}
Introduce io.bitsquare.network.Node#DEFAULT_PORT
Apply consistent style to argument help text
Introduce Node#at static factory and NodeTests
Refactor TomP2PTests

 - Introduce use of Node abstraction for concision
 - Use to BootstrapNode#LOCALHOST and #DIGITAL_OCEAN1 vs. repeating info
 - Make all configuration variables static and final constants
Introduce @Repeat and RepeatRule for repeatable @Test methods

With thanks to original author Frank Appel (@fappel)

See:
 - https://gist.github.com/fappel/8bcb2aea4b39ff9cfb6e
 - http://www.codeaffine.com/2013/04/10/running-junit-tests-repeatedly-without-loops/
Repeat TomP2PTests tests using @Repeat vs. loops