DB class no longer exisst

Fix on install

Database factory, use yml config

Define db driver

Fix config

Maybe drop the param

Fix class name and travis tests configuration

No public properties in Database

Fix some CS

Wrong class

Fix typehint

Try

Fix tests

Do not expose password

Prepare for slave and direct conf

Rework conf write, change slave conf

Missing use

User, pass and dbname are not mandatory, will be inherited

Finalize

Slave config extends master one

Fix CS

Slave conf

PR fixes

Missed ocurence

Handle old configuration file migration

Fixes