Merging
Quoting Early Stages

I tried implementing too much to do with the quotes
Will be iteratively implementing features from quotes trello card 23
    url: https://trello.com/c/U7dsj7gk
Make line_items polymorphic and refactor line_items
Add Quotes to sidebar (features are forthcoming)
This merge is going to suck.
Merge branch 'develop' of https://github.com/AnnArborTees/softwear-crm into develop-david

Conflicts:
	app/controllers/line_items_controller.rb
	app/models/imprintable.rb
	app/models/imprintable_variant.rb
	app/views/shared/_sidebar_menu.html.erb
	db/schema.rb
	spec/models/imprintable_spec.rb
	spec/views/artwork_requests/_artwork_request.html.erb_spec.rb
	spec/views/artwork_requests/_table.html.erb_spec.rb