"subscribed" in external lists is misleading

[wvengen]

When adding a new shared supplier in foodsoft, there is a button "Subscribe" to add the supplier to the foodcoop database. This seems to indicate that something is updated automatically. In practice, as far as I understand, one needs to use external database synchronisation feature on the products page.

Suggestion:

1. Rename "subscribe" to "add", "connect", "link" or "import", or
2. Provide an auto-update functionality.