Before Commit :
- Sometimes user breaks their Mail/SMS templates and have no way to go back to the
original one easily. They don't have any option to reset the template.
After Commit :
- Added new "Reset Template" button
- now user can reset the Mail/SMS template to its first version.
- also it will update the translation of the template
- added New "Reset Mail Templates/Reset SMS Templates" action to edit multiple templates
task- 2231977
closesodoo/odoo#83759
Related: odoo/upgrade#3674
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>