Almost fixed quantified subrecipe
Update Recipe View to show subrecipe quantity

Also updated subrecipe#new to take any unit (not just g or mL). the uni
selected is shown in the recipe view, though cost is based on the g/mL
via the quant_subrecipe
Completed Quant_subrecipe integration less recipe int.

Next: "yields x [unit]" [unit] based on unit called for in recipes (50
ml -> "yields 2 cups", 100g -> "yields 8 oz")
Recipe#show shows correct yield based on called unit

If the recipe calls for a mass, the subrecipe shows the mass unit.
Merge pull request #3 from Green-Collaborative/quantity-for-subrecipe

Quantity for subrecipe