Theme Suggestion order for Nodes, Users, and Terms Updated

Backdrop versions prior to 1.28.3 loaded entity templates in an unexpected order. Versions 1.28.3 and later have adjusted the template loading order to match that of Drupal 7, while also adding another more specific template suggestion.

Versions prior to 1.28.3 loaded templates in the following order (for a node type of "blog"):

node--blog--full.tpl.php
node--blog.tpl.php
node--1234.tpl.php
node.tpl.php

While versions 1.28.3 and later now load in the following order, with the ID template being higher priority than the node type template:

node--1234--full.tpl.php
node--1234.tpl.php
node--blog--full.tpl.php
node--blog.tpl.php
node.tpl.php

Additionally, the ID + display mode template has been added so that the same node can be overridden with per-display mode templates.

The same prioritization of the ID-based template becoming higher priority and the addition of display-mode specific ID templates were also extended to User and Taxonomy Term templates, which now have the following orders:

Users:

user-profile--1234--full.tpl.php
user-profile--1234.tpl.php
user-profile--full.tpl.php
user-profile.tpl.php

Taxonomy Terms (for a vocabulary with the name "tags"):

taxonomy-term--1234--full.tpl.php
taxonomy-term--1234.tpl.php
taxonomy-term--tags--full.tpl.php
taxonomy-term--tags.tpl.php
taxonomy-term.tpl.php

To help identify which templates are being used where, developers can enable theme debug mode.