Refactor network API calls to use centralized authentication context and improve cache handling

- Removed redundant getApiToken function and replaced its usage with getAuthContext in network-api.js, network-events.js, and network-init.js.
- Updated cache handling in network-events.js and network-init.js to use CACHE_KEYS constants for better maintainability.
- Introduced cache.js for centralized cache management functions and constants, including cache initialization and retrieval.
- Added app-init.js for application lifecycle management, including cache orchestration and initialization checks.
- Created app_config.php to securely fetch API token and GraphQL port from configuration.
- Improved error handling and logging throughout the codebase for better debugging and maintenance.

front/php/templates/version.php

@@ -18,7 +18,7 @@ if(file_exists($filename)) {
     if(trim($fileContents) === 'Dev') {
         echo date('H:i:s') . " - " . $fileContents;
     } else {
-        echo $fileContents;
+        echo trim($fileContents);
     }
 }
 else {