Function update

app/core/api/classrooms.js:141–147

({ classroomID, updates }, options)

  // updates = { archived: '', name: ''}
  update ({ classroomID, updates }, options) {
    if (options == null) { options = {} }
    return fetchJson(`/db/classroom/${classroomID}`, _.assign({}, options, {
      method: 'PUT',
      json: updates
    }))
  },

  addPermission ({ classroomID, permission }) {
    return fetchJson(`/db/classroom/${classroomID}/permission`, _.assign({}, {