Moved woocommerce_round_tax_total() to Formatting

woocommerce_round_tax_total() is not actually a deprecated function. In
WC 2.0, the round() method was used from the WC_Tax class.

Moved woocommerce_round_tax_total() from wc-deprecated-functions.php to
wc-formatting-functions.php.
Removed urldecode from $_GET and $_REQUEST

The superglobals $_GET and $_REQUEST are already decoded. Using
urldecode() on an element in $_GET or $_REQUEST could have unexpected
and dangerous results.

See Notes:

http://us1.php.net/manual/en/function.urldecode.php
Removed (document).ready from wc_print_js()

jQuery(document).ready(function($) { is equivalent to calling
jQuery(function($) {.

http://api.jquery.com/ready/
Revert "Moved woocommerce_round_tax_total() to Formatting"

This reverts commit 1f7ba8867e7a32432d046570eba747c7b4d47bf1.
Merge pull request #4590 from toddlahman/master

Removed urldecode from $_GET and $_REQUEST and Removed (document).ready from wc_print_js()
Enhancing nocache helper

* Adding support for DONOTCACHEOBJECT
* Adding support for DONOTCACHEDB
Merge pull request #4591 from alexbain/do-not-cache

Enhancing nocache helper
Ensure stock status is set for variations after setting to 0 Closes #4587