1/ web: adapt formatDate to handle NaN values
DashboardRenderer might return NaN for `Date` or `DateTime` fields if
their original value is null or incorrect.
2/ hr: add job_title in demo data
3/ hr_recruitment: link employee in the chatter for new recruits
4/ hr: remove employee documents in the model
5/ hr_attendance: improve resiliency of relative_time
6/ hr: display manager on res_users
7/ hr: change Address Book to Employee Directory
TaskID: 2009111
closesodoo/odoo#34180
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>