Extend the "Hide path display" feature ("page-less nodes") to other core entities

In #4908 @philsward suggested that there was a need to implement the same feature to include taxonomy terms:

Taxonomies are used for a lot more than tagging content; for example they can be used as select lists. This means that currently, any taxonomies that you don't want to be indexed, have to be added as a disallow to the robots file. ... The architect could opt to remove the path field so there is no "public" alias.

In #100 we introduced a "Hide path display" checkbox in the "Display settings" tab when configuring a content type:

The Drupal version of the contrib module that offers this functionality already supports more entities:

Supported entities

This project includes sub modules that are responsible to add this behavior to different entities. The currently supported entities are:

• Nodes
• Taxonomy terms
• Users
• Files
• Field collection
• Profile 2
• Bean

You'll only need to enable the modules that you wish to add the functionality for. More entities are likely to be supported in the future. If you have a suggestion, submit a feature request using the issue queue.

I think that we should extend this feature in core to support more entities, at least taxonomy terms.