All the PHP files have the "@author" annotation to make clear which
people have contributed to that specific file, however, there is no such
thing in the PHPT files.
This commit will add the "CREDITS" section to the PHPT files. The list
of authors is created from the output of the `git blame` command.
Signed-off-by: Henrique Moody <henriquemoody@gmail.com>
When executing `ValidationException::setTemplate()` using a template
key, it does not try to select the template, but instead it uses the
template key as the template itself.
In order to fix this behaviour, there is now a check for a key with the
defined template. In case the template was not found, use the defined
template as the template itself.
