feat: enhance analytics page with navigation, branding, and donations

- Add 'Go back to Application' button in header
- Include Stellar Nexus logoicon and iconletter in header
- Create comprehensive donations modal with Stellar wallet and PayPal options
- Add social links: X (@josegomez_dev) and Telegram (@josegomezdev)
- Improve Support Our Mission section with better organization
- Add responsive design and hover effects for all new elements

Author: josegomez-dev