adding I18n to Ship link on admin area
Bump to 2.1.7
Add data-hooks to admin/products/new and admin/products/_form

Similar to https://github.com/spree/spree/pull/4521, this commit adds data-hooks that make manipulation of the admin/products/new page considerably easier, cleaner, and more succinct.

Fixes #4682 and #4683
Use permalink rather than slug in 2-1 and 2-0

My PR https://github.com/spree/spree/pull/4683 to `master` and `2-2-stable` turned out not to be backwards compatible with `2-1-stable` and `2-0-stable` due to the shift in nomenclature from `:permalink` to `:slug` that happened between 2.1 and 2.2.

This PR patches this and restores functionality to `2-1-stable` and `2-0-stable`.
Changing currency variable according to google analytics docs

Fixes #4743
add configurable option to clone products without copying original images

Fixes #4711
Bump to 2.1.8.beta
Use permitted_option_value_attributes instead of permitted_option_type_attributes

Fixes #4772