Feat: Data "reset" button (#1913)

* feat: Allow admins to delete family data

* feat: Allow self-hosting users to delete cached data

* Remove system tests

app/jobs/family_reset_job.rb

@@ -0,0 +1,19 @@
+class FamilyResetJob < ApplicationJob
+  queue_as :default
+
+  def perform(family)
+    # Delete all family data except users
+    ActiveRecord::Base.transaction do
+      # Delete accounts and related data
+      family.accounts.destroy_all
+      family.categories.destroy_all
+      family.tags.destroy_all
+      family.merchants.destroy_all
+      family.plaid_items.destroy_all
+      family.imports.destroy_all
+      family.budgets.destroy_all
+
+      family.sync_later
+    end
+  end
+end