title: Load data in formGroup with FormArray Angular
body: <p>I have a dynamic form with FromGroup and FormArray..
  The dynamic form works well, I can add new elements etc....
  On the other hand I have problems to load an object list by default in my form. 
  For example if I have a list with two objects, I would like to have two forms with the data of its two objects... I have an example on stackblitz here : 
  <a href="https://i.stack.imgur.com/7h1LP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7h1LP.png" alt="enter image description here"></a><a href="https://stackblitz.com/edit/angular-4crhvw" rel="nofollow noreferrer">https://stackblitz.com/edit/angular-4crhvw</a></p>
  
  <p>PS: in my example stakblitz I made the example to display an element but I want to display all elements </p>
  
  <p>See as attachments what I would like to post</p>