Admin CSV Import

[sean-dickinson]

What

• Add a CSV import option to allow bulk creations of the entities in a school

Context

• This CSV import would only be run when there aren't already existing entities in the school for this year; it does not need to handle merging with intitial data.
• The import should provide a template to download with the necessary columns
• The import should be able to create classrooms, teachers, students all at once