Show warnings about automated checks in edit view only

[olivierthereaux]

This issue is related to #1695 and #1692.

In cases where automated checks of the datasets can not be performed (for whatever reason), the tool creates a number of warnings (and even an error, for some odd reason), as in this screenshot:

Expected Behaviour

Ideally,

1. there should be no errors (the failure of automation does not imply a problem with the dataset!).
2. And arguably, the warnings should be kept only to the "edit" view for the dataset steward to look at, but not in the "public" view.