see https://github.com/outline/outline/issues/668
* First pass (working) collection export to zip * Add export confirmation screen * 👕 * Refactor * Job for team export, move to tmp file, settings UI * Export all collections job * 👕 * Add specs * Clarify UI
* Collection edit modal * Add icon * 💚 * Oh look, some specs * Delete collection * Remove from collection * Handle error responses Protect against deleting last collection * Fix key * 💚 * Keyboard navigate documents list * Add missing database constraints