[ADD] close_datetime for cases

[Vladimir-A]

Created a new row in the DB to store the case closing time value. The DB already has the case closing date, but we need a more accurate value.

[whikernel]

Hi! Thanks - I think we could use the current field and do a migration from date to datetime.
So we don't have to change the underlying shema (marshmallow etc)

What do you think?

[Vladimir-A]

Hi! Thanks - I think we could use the current field and do a migration from date to datetime. So we don't have to change the underlying shema (marshmallow etc)

What do you think?

Hi, that was my first thought, but I was afraid to break the internal logic tied to this field, so I made a new one. I agree that a more correct solution is to migration from date to datetime.