[MIG]maintenance_ux: mail template migration to new sintax
[MIG]maintenance_ux: mail template migration to new sintax

closes ingadhoc/miscellaneous#85

Signed-off-by: Nicolas Mac Rouillon <8d34fe7b7c65100e706828a8c0d03426900ffb59@adhoc.com.ar>

ingadhoc/miscellaneous,ingadhoc/miscellaneous