refactor: remove tour feature and Tjing import

Tour functionality has moved to its own project (HyzrTour).
Removes all tour-related code, Tjing integration, and associated
views/styles/scripts. Keeps the saveCourseToDB ON CONFLICT fix.

server.js

@@ -4,7 +4,6 @@ const path = require('path');
 const { initializeDatabase, checkAndPopulateDatabase } = require('./src/db');
 const playerRoutes = require('./src/routes/players');
 const courseRoutes = require('./src/routes/courses');
-const tourRoutes = require('./src/routes/tours');
 const pageRoutes = require('./src/routes/pages');
 const logger = require('./src/logger');
 
@@ -18,7 +17,6 @@ app.use(express.json());
 
 app.use(playerRoutes);
 app.use(courseRoutes);
-app.use(tourRoutes);
 app.use(pageRoutes);
 
 initializeDatabase().then(async () => {