Update dependencies and refactor authentication logic

- Replaced `bcrypt` with `bcryptjs` for compatibility in `authService.js` and `settingsService.js`.
- Updated package versions in `package.json` and `package-lock.json`, including `multer`, `nodemailer`, and others.
- Added storage management features in the frontend, including free storage calculation and localization updates for new terms in `falukant.json` files.

backend/package.json

@@ -15,7 +15,7 @@
   "license": "ISC",
   "dependencies": {
     "amqplib": "^0.10.4",
-    "bcrypt": "^5.1.1",
+    "bcryptjs": "^2.4.3",
     "connect-redis": "^7.1.1",
     "cors": "^2.8.5",
     "date-fns": "^4.1.0",
@@ -26,9 +26,9 @@
     "i18n": "^0.15.1",
     "joi": "^17.13.3",
     "jsdom": "^26.1.0",
-    "multer": "^1.4.5-lts.1",
+    "multer": "^2.0.0",
     "mysql2": "^3.10.3",
-    "nodemailer": "^6.9.14",
+    "nodemailer": "^7.0.11",
     "pg": "^8.12.0",
     "pg-hstore": "^2.3.4",
     "redis": "^4.7.0",