Add extra template lookup by author role

[andrei.igna]

Themes can display an author page, but it's always only a generic one.

At the moment it's a tricky process to make different templates for different authors (except targeting them by specific IDs or usernames) and here is a idea:

Add templates for user/author role, with author templates hierarchy looking like this:

• author-{nicename}.php
• author-{ID}.php
• author-{role}.php - adding support for author-administrator.php, author-editor.php and author-{custom-role}.php
• author.php
• index.php

The extra template lookup can be added in get_author_template function and would make it easier for theme developers to prepare templates without specifying specific user info (IDs or usernames)

[Mista-Flo]

Hum, it should be handled inside author.php IMO. You can do a role switch and then load the template you want. It would be a bit overkill to add all this hierarchy IMO.