Implemented: support for dynamic features for product variants in product summary page (#166)

[amansinghbais]

Related Issues

Closes #166

Short Description and Why It's Useful

On product summary page if a product doesn't have exact "Color" and "Size" feature attributes, the variant selector doesn't work. Users have no way to switch between products then. Hence Implemented support for dynamic features for product variants in product summary page.

• Removed the hardcoded logic for "color" and "size" attributes.
• Written logic to display only the next available features based on features available as of now.
• Written logic to update variant based on selected features dynamically.

Screenshots of Visual Changes before/after (If There Are Any)

IMPORTANT NOTICE - Remember to update CHANGELOG.md with description of your change

Contribution and Currently Important Rules Acceptance

• [x] I read and followed contribution rules

[amansinghbais]

Handled in following PR: https://github.com/hotwax/preorder/pull/284