More food

New fruit types:
* pear
* grapefruit
* cherries
* plums
* grapes
* pineapple
* coconut
* peach
* cranberries
* watermelon
* melon
* raspberries
* blackberries

Tell me if you think some or all are inappropriate.

Next up:
* add them to already existing recipes
* add more general versions of fruit juice/jam and cooked fruit 
* add them to item_groups
* add more food types