Changed the RTL check to target the head element for the dir attribute.
Altered how breadcrumb images are applied to improve compatibility with RTL Web pages.
Merge branch 'v3.0'
Altered how breadcrumb images are applied in Base theme and WET theme to improve compatibility with RTL Web pages.
Fixed a few JavaScript errors with Base and WET theme mobile views.
Vertically centred the breadcrumb images in the Base and WET themes.