PIM-3144: Fix javascript and css
PIM-3144: Fix css and align textarea and button
PIM-3140: Can delete threads with children
PIM-3144: Trash icon purple to black
PIM-3140: Added button to delete a reply
PIM-3144: Fix javascript
PIM-3140: Can delete a child
PIM-3140: Fix delete button right
PIM-3140: Moved javascript
Merge pull request #1491 from akeneo/PIM-3140

PIM-3144: polishing