Non-Eclipse project repository detected: ECA validation will be skipped

This error message is not really useful when trying to debug failures such as the one reported here: eclipsefdn/helpdesk#2081 (comment 1028015)

I do understand that we might not be able to determine what project the fork is for. However, I think we should be able to warn the user of any potential ECA problems.

For example, we should be able to validate if the author has an ECA on file regardless of their committer status and inform the user.

The error in the UI is not really useful, it simply returns 'An error occurred while merging. Try again.'.*

*That's assuming that the error is triggered by the ECA validation. We should be able to determine that once we found the root cause of the issue that was reported.