[imp]mail: display who like a post ,on hover like button show people list in tooltip
[FIX/REM]mail:display who like a post show list in tooltip,remove popover
[FIX]mail:reduce the number of request & remove (if) statement add in (return) statement
Merge branch 'master-mail_chatter_whos_like-ppa' of https://github.com/odoo-dev/odoo into master-mail_chatter_whos_like-ppa
[FIX]mail:on hover like button tooltip placement change