VvvebJs

demo images in wrong location, and referenced to wrong location

Restrict media files scan to media folder to avoid exposing files in VvvebJs root folder, vulnerability reported by @C4spr0x1A

Added file sanitization to avoid directory traversal vulnerability in save.js node backend https://github.com/givanz/VvvebJs/issues/409

Fix for surroundContents exception when selecting multiple non text nodes for styling in text editor https://github.com/givanz/VvvebJs/issues/406

Enable save button if changes are made in code editor