Fix efficiency saving and volume output
Add equals method for Hops
Add Equals method for Beerstyle
Add equals method for HopAddition
Add Malt equals method
Add MaltAddition equals method
Add Equals method for Yeast addition
Adapt BeerXML reader to be used by plain tests
Several fixes for BeerXMLWriter. And adapt it to be used by tests
Merge remote-tracking branch 'edrews/master/master' into BeerXML

Conflicts:
	BrewShop/src/main/java/com/brew/brewshop/xml/BeerXMLReader.java
	BrewShop/src/main/java/com/brew/brewshop/xml/BeerXMLWriter.java
Use a local context reference rather than getting the activity every time we need it
Some tidying up and improve logging
Merge pull request #40 from DougEdey/BeerXML

Beer xml