Updated Whatsapp button

Signed-off-by: Spyros Lefkaditis <slefkaditis@gmail.com>
fix

Signed-off-by: Spyros Lefkaditis <slefkaditis@gmail.com>
- Fixes

- Removed whatsapp icon
- Changed category heading css

Signed-off-by: Spyros Lefkaditis <slefkaditis@gmail.com>