Clearly Identify Submission Errors

[kosarko]

It should be clear, when submitting an item, what the errors are.
Orange or red exclamation marks on describe step signalize something is wrong, but it's hard to tell what exactly.

What's wrong with the describe steps below?

[kosarko]

@milanmajchrak are you already tracking this?

[milanmajchrak]

@milanmajchrak are you already tracking this?

Not this one, but I thought there was an issue for it. However, all known submission issues are now tracked here: dataquest-dev#857.

[milanmajchrak]

@milanmajchrak are you already tracking this?

@kosarko
It is Vanilla error, should be fixed here: DSpace/dspace-angular#2742