Additional issues on the feedback form

[cdparra]

• Null error on vm.onSuccess
  

• Request should go with type = TECHNICAL_FEEDBACK so that password is applied.
• Use input type password for password field
• Display the average feedback score in the contribution cards, with the popup showing the detail of the three scores.

• Show password field only if campaign has configured a password
• Make sure sorting by average feedback is working and that averages shown in cards are correct
• Show average feedback also in proposal page, just as shown with upvotes and down vots
• After submitting a feedback, update stats in page

[yolile]

all changes are now in develop