Admin can delete category

*Admin deletes category and all assigned products
Fixed conflicts
Modifications per Gabebw- mostly spacing
Create images table
Update syntax for continuity across app
Add image text_field to products#new view

Description was also changed to a text_area for more lengthly product descriptions
WIP
Nothing is broken right now. Celebrate
Another checkpoint where nothing is broken
Merchant can add image of product
Remove image render from products#new template
Remove Image.new from products#new
Edit images#new to allow only current user to add image to post

This feature is currently untested because I no longer can add new posts because we're in the middle of pull requests