allow no password on phpMyAdmin.
Revert "allow no password on phpMyAdmin." it was no password but password "blank" so it was not needed.

This reverts commit 29a6e3939de28a5f6369a2eb277291900fc76599.
change Apache allow/deny to Apache 2.4 notations.
stop default virtual host as it seemed to prevent wp.dev access.
- run wp-cli installer as a root.
- give wp-cli wordpress directory name.