Added unit of measure and translation creation.
Merge pull request #4 from westernmilling/unit-of-measure

Added unit of measure and translation creation.
Price translation creation.
Support translation of prices through an expression.
Merge pull request #5 from westernmilling/create-price-translation

Price translation creation.
Quantity Translation creation.
Create new quantity translations for PO processing.
- Also includes product translation test.
Merge pull request #6 from westernmilling/create-quantity-translation

Quantity Translation creation.
Commit blank spec to work on UOM feature.