Adding ValuePresenter concept

I want the values to be renderable as well, which means creating a
Value Presenter.
Adding Property#to_translation_key_fragment

A Property is a predicate decorated with a value
Adding a fail safe for ValuePresenter#render

I want to create a custom view for these values
Adjusting properties view to render custom value
Merge branch 'adding-value-presenter'

* adding-value-presenter:
  Adjusting properties view to render custom value
  Adding a fail safe for ValuePresenter#render
  Adding Property#to_translation_key_fragment
  Adding ValuePresenter concept