Adds editable table for ingredients

[twschum]

Revamps the ingredient stock page to use a Datatable with a customized version of EditCell, a plugin for editing cells of the datatable.

Features:

• ingredient table is now inline-editable
• add ingredient show up on a modal form
• each ingredient has a "delete" button with a confirm
• each ingredient has a "clone" button that opens a new ingredient form pre-populated with that ingredient
• updating or adding an ingredient will do a smart update of the available recipes on every request
• adds icons throughout the site