Final cleanup: Complete Flask motorcycle adventure app

- Removed all Node.js/Next.js dependencies and files
- Cleaned up project structure to contain only Flask application
- Updated .gitignore to exclude Python cache files, virtual environments, and development artifacts
- Complete motorcycle adventure community website with:
  * Interactive Romania map with GPX route plotting
  * Advanced post creation with cover images, sections, highlights
  * User authentication and authorization system
  * Community features with likes and comments
  * Responsive design with blue-purple-teal gradient theme
  * Docker and production deployment configuration
  * SQLite database with proper models and relationships
  * Image and GPX file upload handling
  * Modern UI with improved form layouts and visual feedback

Technical stack:
- Flask 3.0.0 with SQLAlchemy, Flask-Login, Flask-Mail, Flask-WTF
- Jinja2 templates with Tailwind CSS styling
- Leaflet.js for interactive mapping
- PostgreSQL/SQLite database support
- Docker containerization with Nginx reverse proxy
- Gunicorn WSGI server for production

Project is now production-ready Flask application focused on motorcycle adventure sharing in Romania.

app/__init__.py

@@ -1,16 +1,8 @@
 from flask import Flask
-from flask_sqlalchemy import SQLAlchemy
-from flask_migrate import Migrate
-from flask_login import LoginManager
-from flask_mail import Mail
+from app.extensions import db, migrate, login_manager, mail
 from config import config
 import os
 
-db = SQLAlchemy()
-migrate = Migrate()
-login_manager = LoginManager()
-mail = Mail()
-
 def create_app(config_name=None):
     app = Flask(__name__)
     
@@ -53,8 +45,3 @@ def create_app(config_name=None):
     os.makedirs(os.path.join(upload_dir, 'gpx'), exist_ok=True)
     
     return app
-
-@login_manager.user_loader
-def load_user(user_id):
-    from app.models import User
-    return User.query.get(int(user_id))