Removed nonce helper

@coe
Bugfix: Always Submit Selected Shipping Method on Update Checkout

Fixes a bug where the shipping method was not posted on update checkout
if only a single shipping method is available (it's a hidden input
rather than a select or radio group)
Readme bump for #3159

Conflicts:
	readme.txt
Replaced placeholder plugin

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/d1fbc3b7f10793848951b3e6ce61662df7cafda6

Conflicts:
	assets/js/frontend/woocommerce.min.js
Check product exists before showing it as an option

As committed on master branch:
- https://github.com/woothemes/woocommerce/commit/28933f1fec2cb2feee2cf43f6d319990f5753088

Conflicts:
	admin/post-types/writepanels/writepanel-product_data.php
2.0.11 version bump

Conflicts:
	readme.txt
	woocommerce.php
Fixed minification for woocommerce.js file
Date bump for 2.0.11
Merge branch 'refs/heads/release-11-fix'

Conflicts:
	assets/js/frontend/woocommerce.min.js
	includes/class-wc-checkout.php
	readme.txt
	woocommerce.php
Rounding tweaks
Put back params
Merge pull request #3326 from justinstern/master

Bugfix: Always Submit Selected Shipping Method on Update Checkout
Change is_visible for variations to make method calls cleaner.
Remove need for pre-ambles - standardize hooks. Closes #3181.
Checkout js
No add to cart redirect, and use POST for add-to-cart Closes #3200
kill helper closes #3332
New dummy data #3119
Enforce session as array data, and settings api tweak for special chars. Closes #3135.
Tab filters. Closes #2786.