Django 2.2 Support

[bradenmacdonald]

edx-platform is being upgraded to Django 2.2 and we need to ensure this package will be compatible.

edX contact is @jmbowman

[bradenmacdonald]

@xitij2000 request from edX - would you be able to (assign someone to) look into this please?

[xitij2000]

@bradenmacdonald Created BB-2061 for this. Will see if Serenity has capacity first. Is this needed in the current sprint?

[bradenmacdonald]

@xitij2000 First thing next sprint should be ok.