Lock jquery-rails to 3.1.0 as 3.1.1 breaks data-confirm. Fixes #4892
make incl/excl in ShippingRate#display_price translatable

Fixes #4894
make click_and_drag_on_the_products_to_sort_them in spree/admin/taxons/index translatable

Fixes #4894
Only destroy tax adjustment for open order when the associated tax rate is deleted. For closed order just nullify the source_id.

Update line_item & order when adjustments are deleted.

Add rspec tests to cover cases where adjustments get (or not get) destroyed when taxrate/promotion is deleted.

Move deals_with_adjustments to a separate mixin.

Add new mixin to core

Revert previous changes to remove unnecessary tests.

Remove order.update! and simplify rspec.

Fixes #4828
Fixes #4771