Trait refactor

[xQwexx]

Hi @artf
I am working of refactoring of the Trait module because I wanted to build some custom input layouts but there was not existing generic ones that I could use, so I started to work on a generic InputViews (Backbone model attribute modifiers),
this would also enable to use it instead of PropertyView, TraitView and InputView so it will be much easier to maintain and understand

To a more reusable which would not depend on the component and trait to be a backbone model:

But I think this would require to break the current API for the Traits in some places, so I wanted to know what do you thinks of this before I do a clean pr (so this is a WIP branch of mine with some unrelated changes)

      let input = new TraitTextView(em, { name: 'route' })
      input.setTarget('name', this.model, { changeProp: true });
      this.$el.append(input.render().el);

[artf]

Hey @xQwexx I'm closing this as I'm not planning to merge it and it generates noise.
Let me know if you're open to discuss how to make the editor UI better with reusable web components as mentioned in a previous post.