Separate FilterCards into Sections

[zainfathoni]

For instance, separate Products based on their Categories.

• Styling
  • [x] Conditional rendering
  • [x] Grid adjustments
• Model
  • [x] Reduce filteredItems to sectionedItems
• View
  • [x] Map sectionedItems to proper JSX
  • [x] Display section name instead of section key
  • [x] Componentize Section