Studio users can now add a clickable status bar to forms directly from the form editor. This makes it easier to configure clear process stages, such as draft, in progress, and done, without custom development.

Odoo now prepares and retrieves message recipients through direct queries instead of heavier processing. This should improve performance and responsiveness when sending messages, invitations, notifications, and follower updates across apps that use the mail system.

Task: https://www.odoo.com/web#id=54755&view_type=form&model=project.task&action=333&active_id=965&menu_id=4720

This change adds validation for employee phone numbers in the HR app, helping teams keep employee contact details accurate and consistently formatted. It also adds related HR configuration options so the validation can be managed from settings.

Description of the issue/feature this PR addresses:
Add employee phone validation :-)

![image](https://user-images.githubusercontent.com/16716992/32990117-00f68ff8-cd24-11e7-99b0-58d129ad4d79.png)

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