[ampache] Update to 5.0.0

[rsertelon]

This is a major release, with many changes listed here:

• https://github.com/ampache/ampache/wiki/Ampache-Next-Changes
• https://github.com/ampache/ampache/wiki/Ampache-5-for-users
• https://github.com/ampache/ampache/wiki/cli-faq

[rsertelon]

This requires gettext in core/php .

This requires me to add these packages:

• rsertelon/php (see #59 )
• rsertelon/composer

And to use them in:

• rsertelon/php-fpm
• rsertelon/ampache