* RTL+i18n: product title stricture as translation string to allow RTL languages to change `→` TO `←`
* i18n: move the `→` into the translation string to allow RTL languages to translate to `←`
* RTL: product filter indent using `→` and `←` chars
* a11y: remove `←` char, it's a bad accessibility practice to use visual indicators to point to menus
* a11y: remove `←` char, it's a bad accessibility practice to use visual indicators to point to menus
* Fixed case for all _e, esc_attr_e and esc_html_e strings
* Fixed case for all _n_noop strings
* Fixed case for all _x strings
* Fixed case for all __, esc_html__ and esc_attr__ strings
* Fixed a few more strings
* Fixed strings in unit tests
* Fix PayPal Standard case.
* Save Order text
* Added comments to properties that don’t have any.
* Added comment to `get_chart_widgets` since it
was `method function`
* Added missing `exit if accessed directly`
* Updated `current_filters` and `products_widget`
* fixed indentation - swapped spaces for tabs at start of line, swapped
tabs for spaces min-line for alignment
* removed instances of `@return void` and `@access public`
* improved readability
@see http://make.wordpress.org/core/handbook/coding-standards/php/