OnCourse bulk insert images

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "OnCourse bulk insert images",
  "version": "1.0.0",
  "description": "Bulk insert images in OnCouse website page",
  "manifest_version": 2,
  "permissions": [
    "tabs",
    "https://app.oncoursesystems.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://app.oncoursesystems.com/websites/edit_section.aspx*"
      ],
      "js": [
        "script.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "assets/icons/48.png",
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "assets/icons/multi_file.gif",
    "body.js"
  ],
  "icons": {
    "16": "assets/icons/16.png",
    "48": "assets/icons/48.png",
    "128": "assets/icons/128.png"
  }
}