Until now, the action container opened/closed an action dialog directly on the template, and relayed on the bus to communicate with the action service. Now the action service opens/closes the action dialogs using the action service. To do this, a new close method is created on the action service. This commit also separates the code of dialog service and dialog container to be more standard. closes odoo-dev/odoo#900 Related: odoo-dev/enterprise#156 Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>