This bookmarklet will swap the source type of a service in a template
Drag this link to your bookmarks bar
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Template Service Source Type Swap
Usage:
1. Drag the link to your bookmarks bar
2. Open a template service page with URL format: /workspace/templates/<uuid>/service/<uuid>
3. Click on the bookmarklet
4. If the service uses an image source, you'll be prompted to enter a repository
5. If the service uses a repository source, you'll be prompted to enter an image
6. Confirm the swap and the template will be updated
Source code available here
Minified source code available here