Show order currency

- method to return the order currency
- allow 'currency' parameter for 'woocommerce_price'
woocommerce_json_search_products() is now a method of WC_AJAX. Use $this->json_search_products() instead.
Merge pull request #4146 from toddlahman/master

Methods called statically set to static
Merge pull request #4145 from scottbasgaard/master

woocommerce_json_search_products() is now a method of WC_AJAX. Use $this...
optimizing images
Use remove_ordering_args() to remove order query filters instead of remove_product_query(). Most likely was a merge issue. Fixes #4142
REST API - Fix fatal error due to missing get_timezone function
Remove unused variable from function
Add formatted_woocommerce_price filter.
WooCommerce 2.1 requires WordPress 3.8
Remove function and use global woocommerce_timezone_string function instead
Merge pull request #4150 from kloon/fix_api_timezone_fatal_error

Fix api timezone fatal error
Merge pull request #4153 from kloon/tweak_formatted_price_filter

Add formatted_woocommerce_price filter.
Merge pull request #4151 from toddlahman/master

wc_ delimiter to identify start of uniquid
Merge pull request #4148 from scottbasgaard/master

Use remove_ordering_args() to remove order query filters instead of remo...
Merge pull request #4147 from BFTrick/optimize-images

Optimizing Images
Merge pull request #4143 from mihaigrigori/master

Show order currency
Indenting fail.
filter for cart fragment #4132
Accessing currency wrong