Major UI/UX redesign and feature enhancements

🎨 Complete Tailwind CSS conversion
- Redesigned post detail page with modern gradient backgrounds
- Updated profile page with consistent design language
- Converted from Bootstrap to Tailwind CSS throughout

✨ New Features & Improvements
- Enhanced community post management system
- Added admin panel with analytics dashboard
- Improved post creation and editing workflows
- Interactive GPS map integration with Leaflet.js
- Photo gallery with modal view and hover effects
- Adventure statistics and metadata display
- Like system and community engagement features

🔧 Technical Improvements
- Fixed template syntax errors and CSRF token issues
- Updated database models and relationships
- Enhanced media file management
- Improved responsive design patterns
- Added proper error handling and validation

📱 Mobile-First Design
- Responsive grid layouts
- Touch-friendly interactions
- Optimized for all screen sizes
- Modern card-based UI components

🏍️ Adventure Platform Features
- GPS track visualization and statistics
- Photo uploads with thumbnail generation
- GPX file downloads for registered users
- Community comments and discussions
- Post approval workflow for admins
- Difficulty rating system with star indicators

app/templates/community/index.html

@@ -177,13 +177,13 @@
                                     <svg class="w-3 h-3 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 12h.01M12 12h.01M16 12h.01M21 12c0 4.418-4.03 8-9 8a9.863 9.863 0 01-4.255-.949L3 20l1.395-3.72C3.512 15.042 3 13.574 3 12c0-4.418 4.03-8 9-8s9 3.582 9 8z"></path>
                                     </svg>
-                                    {{ post.comments|length }}
+                                    {{ post.comments.count() }}
                                 </span>
                                 <span class="flex items-center">
                                     <svg class="w-3 h-3 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                                         <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4.318 6.318a4.5 4.5 0 000 6.364L12 20.364l7.682-7.682a4.5 4.5 0 00-6.364-6.364L12 7.636l-1.318-1.318a4.5 4.5 0 00-6.364 0z"></path>
                                     </svg>
-                                    {{ post.likes|length }}
+                                    {{ post.likes.count() }}
                                 </span>
                             </div>