Create woocommerce-uk_UA.po

Ukrainian language
Sale products
Revert to previous logic, but fix tax total #3924
Remove filter fix from .17
Don't be so generous with this jQuery selector. Fixes #3933
[sale_products] has incorrect post_type. Fixes #3934

In 2.1, woocommerce_get_product_ids_on_sale() used 'product1' instead of 'product' for post_type.
Consistant method names Closes #3901, return doubles instead of number formatted strings.
Merge pull request #3940 from scottbasgaard/master

Don't be so generous with this jQuery selector. Fixes #3933
Prepend main WC Session cookie with 'wp' so batcache doesn't cache pages, and set cookie only when cart has contents. #3513
Wrap messages with WC div so they are styled
Unused vars Closes #3937
Some fixes for Czech translation

* Close HTML tags correctly
* Fix the plural forms expression
* Remove excess placeholder
since we are running our own passwd reset facility, we should allow other plugins to validate the password before resetting it.
Merge pull request #3943 from SergeyBiryukov/master

Some fixes for Czech translation
fixing norwegian typo with {order_date}
Refactor coupon code so coupons get the actual discount amount, redone edit coupon screen with tabs, added coupon item limits which Closes #3902
Merge pull request #3947 from BFTrick/fix-norwegian-translation-master

Fixing Norwegian Typo on Master
CH postcode validation
added BR postcode validation
fixed is_postcode method description