* Merge @Sympa::ConfDef::params into %Sympa::ListDef::pinfo
* Merge %Conf::old_params into %Sympa::ListDef::pinfo
* Add aliases of parameter names for compatibility to sympa.conf/robot.conf of earlier versions.
* Move content of Sympa::ListDef to Sympa::Config::Schema
* Move content of Sympa::ConfDef to Sympa::Config::Schema
* Defining additional format entries in config schema.
* Merge sympa.conf(5) and list_config(5) into sympa_config(5).

family_signoff action no longer does use one-time ticket.

Prevent the error on "Modification of non-creatable array value" by using "[header->Field][-1]" in scenarios.

File names for search filters may not be quoted.

Scenario: bug fix: If regexp argument contains "[domain]", metacharacetrs in domain won't be escaped.

Sympa::Scenario::new() was unable to load scenario filename including dots. Example: visibility.igr.univ-rennes1.fr

Replace Sympa::List::load_list_of_scenarios() with Sympa::Scenario::get_scenarios().

Other cleanup of code.

This will fix several bugs due to confusion with function and parameter.

[bug] If a structured parameter (e.g. archive.web_access) is given, scenario header mistakenly named using parameter path (archive.web_access.header) instead of using scenario function (archive_web_access.header).
Fixed by assigning correct identifier.

Remove code for global parameters `log_module` and `log_condition` which were applied only to Sympa::Scenario module.

On mysql & PostgreSQL, undefined db_host is treated as "localhost".