Add price_filter results to include extended product types with a variable price
Merge pull request #3855 from franticpsyx/additional_price_filter_results

Add price_filter results to include extended product types with a variable price
Probably a bug in WC 2.1
Notice fix Closes #3859.
bump_request_timeout closes #3857
Init no longer needed - settings API refreshes settings Closes #3858
wp_list_pluck #3852
Coupon usage limits per user (using email + ID). Closes #3314
Number format taxes, and allow 'auto' DP (we don't want to round these values) Closes #3703
Merge remote-tracking branch 'woo/master'

Conflicts:
	includes/admin/settings/class-wc-settings-shipping.php
class-wc-settings-shipping.php : HTML fix (missing TR and typo in TFOOT)
Merge pull request #3861 from tivnet/master

class-wc-settings-shipping.php : HTML fix (missing TR and typo in TFOOT)
Format decimals with single function, convert locale to standard form. #3862
Allow entering sale price as blank string and not convert it to numeric '0' - to avoid "fake" sales events.
Merge pull request #3866 from tivnet/master

Allow entering sale price as blank string and not convert it to numeric '0'
Print JS after print scripts (at 20) Closes #3865.
Check values are set before casting as floats
Save fees
fix urls