JS coverage updates
JS coverage updates

- Disabled source minification
- Added HTML report output

LEARNER-1811

edx/ecommerce,edx/ecommerce,eduNEXT/edunext-ecommerce,edx/ecommerce,eduNEXT/edunext-ecommerce,eduNEXT/edunext-ecommerce,edx/ecommerce,eduNEXT/edunext-ecommerce