Change upgrade URL to extension manifest URL instead of the upgrade service redirect

[david-poindexter]

Description of bug

Currently the "Upgrade?" URL in Settings > Extensions > Installed Extensions points to https://dnnplatform.io/redirect.aspx?core=______&version=______&type=______&name=______ and that is an invalid URL.

Steps to reproduce

List the precise steps to reproduce the bug:

1. Go to Settings > Extensions > Installed Extensions
2. View list of extensions
3. Hover over "Upgrade?" URL
4. See invalid URL

Current behavior

Invalid URL.

Expected behavior

This should point to the URL for the extensions as indicated in the extension's manifest.

Screenshots

n/a

Error information

n/a

Additional context

n/a

Affected version

• 10.00.00 alpha build (in development)
• 09.06.01 latest supported release

Affected browser

• Chrome
• Firefox
• Safari
• Internet Explorer 11
• Microsoft Edge (Classic)
• Microsoft Edge Chromium