Feature: Support both entry and display of Entites which point *back* to an entity

[ptsefton]

Background

if you want to record the provenance of a File that is done with a a CreateAction entity, where the result property links to the File. But as the result Property is not on the File then there is no way to enter this.

Similarly when displaying the File it would be good to show that it is linked to the CreateAction -- See the way Describo does this

What to implement

We need to implement the Describo "resolve" idea in some form, using the same profile syntax if possible, so that a user can (for example):

• Link a file to a new CreateAction as result (or a person to a new CreateAction as an Agent)
• See such links when viewing a File or a Person object

[ptsefton]

Will try showing @reverse properties alongside 'normal' props int he main editor pane:

• [ ] Add forward arrows to each prop like name: ->
• [ ] When displaying an input group ALSO look for reverse props that link FROM entities and show like agent: <-