WIP making comments editable

Not ready for merging.   @TheDudeWithTheThing 

Save comment doesn't currently work, and Javascript can be cleaned up to avoid the need for the IDs.  
extract out the parent part to a var, cleans it up real nice

```
var $parent = $(event.target).parents('.edit-comment')

if (isEditing) {
  $parent.find('.read-only-comment').show();
  ...
```