feat: Major updates to backend structure and security enhancements

- Removed `COMMON_ERRORS.md` file to streamline documentation.
- Added `Flask-Limiter` for rate limiting and `redis` for session management in `requirements.txt`.
- Expanded `ROADMAP.md` to include completed security features and planned enhancements for version 2.2.
- Enhanced `setup_myp.sh` for ultra-secure kiosk installation, including system hardening and security configurations.
- Updated `app.py` to integrate CSRF protection and improved logging setup.
- Refactored user model to include username and active status for better user management.
- Improved job scheduler with uptime tracking and task management features.
- Updated various templates for a more cohesive user interface and experience.

backend/app/node_modules/node-releases/LICENSE

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+The MIT License
+
+Copyright (c) 2017 Sergey Rubanov (https://github.com/chicoxyzzy)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

backend/app/node_modules/node-releases/README.md

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+# Node.js releases data
+
+All data is located in `data` directory.
+
+`data/processed` contains `envs.json` with node.js releases data preprocessed to be used by [Browserslist](https://github.com/ai/browserslist) and other projects. Each version in this file contains only necessary info: version, release date, LTS flag/name, and security flag.
+
+`data/release-schedule` contains `release-schedule.json` with node.js releases date and end of life date.
+
+## Installation
+```bash
+npm install node-releases
+```

backend/app/node_modules/node-releases/package.json

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+{
+  "name": "node-releases",
+  "version": "2.0.19",
+  "description": "Node.js releases data",
+  "type": "module",
+  "scripts": {
+    "build": "node scripts/build.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/chicoxyzzy/node-releases.git"
+  },
+  "keywords": [
+    "nodejs",
+    "releases"
+  ],
+  "author": "Sergey Rubanov <chi187@gmail.com>",
+  "license": "MIT",
+  "devDependencies": {
+    "semver": "^7.3.5"
+  }
+}