Add 'woocommerce_address_to_edit' filter

To allow extensions to filter the address displayed on the "Edit Address" form.
Merge branch 'release-2-0-14' of github.com:woothemes/woocommerce into release-2-0-14
Merge pull request #3690 from thenbrent/release-2-0-14

Add 'woocommerce_address_to_edit' filter
Merge remote-tracking branch 'woo/release-2-0-14' into release-2-0-14-tivnet