Fix landing layout

[YukieMan97]

closes #63 , partially completes #86

Landing page layout and style updated by changing ...

• search input style using material-ui instead of react-bootstrap
• furniture type select form using material-ui instead of react-bootstrap
• price range slider using material-ui instead of inputting min and max price range
• filter menu can still be seen while listings are scrollable

View Seller's Profile layout updated by changing the format from Cards to Grid items