Pass instance of WC_Order to its filters

So that extensions hooking to the filters know which order the current
filter is being applied to and can perform customisation on specific
orders (not just all orders).
Merge pull request #3709 from thenbrent/release-2-0-14-order-filters

Pass current instance of `WC_Order` to its filters
Tweak rounding when out of base to prevent 1p issues

@coenjacobs this is taken from 2.1
@growdev this fixes that ticket from this morning.
Send tax inclusive, rounded item price to google. Fixes #3718

@coenjacobs .14?
Add a script to add support for RTL when enabled to fix chosen. Fixes #3604

@coenjacobs maybe for .14?

Conflicts:
	assets/css/admin.css
	assets/css/admin.less
	includes/admin/class-wc-admin-assets.php
Check for undefined attributes. Closes #3487.

Conflicts:
	assets/js/frontend/add-to-cart-variation.min.js
Improve cart update performance. Closes #3495.

Conflicts:
	includes/class-wc-form-handler.php
Flag a refresh when creating an account to prevent nonce issues. Fixes #3612.

@coenjacobs Might be for .14? Part of it anyway, can't cherry pick this
one.

Conflicts:
	assets/js/frontend/checkout.min.js
	classes/class-wc-checkout.php
Readme bump, getting ready for version 2.0.14
Bumped versions
Handle local pickup taxes when getting taxable address

From
https://github.com/woothemes/woocommerce/commit/b797cdb6724384e7d058340b
7c79c3820e87dd1d
Merge branch 'release-2-0-14' of github.com:woothemes/woocommerce into release-2-0-14