Validation of the 'Add Document' form

[ion-alecsandri]

Let's take look into a "add document" instead of "add interview" like before.

Here the image file can not be upload. But now I can do that.

And all data on "new document reference form" should be validated.

[alexander-elgin]

179e90ccc4047322e99e2ddb34b3ecd650bfa4ad