Updates vendor/cache with up-to-date dependencies
Don't force local gems in bootstrap script
Fixes Forms::AddressForm specs

Accommodates focus on :state_name (vs :state_id) in new address
submissions by manually building a valid_attributes hash rather than
relying on Spree's in-built factories to do it.

Also removes validation from :address2.
Don't rely on polymorphic_path, which falls over in cells
At least for the moment, don't capture an address2 field
Expect the billing address to be set after adding a shipping address
Cleans up some lint
Adds rudimentary test-coverage for address-book features