Migrate to Rais 8.0

- Remove all Rodauth stuff and implement simple custom auth
- Migrate from sprockets to propshaft, hack some bootstrap stuff

db/migrate/20241108180654_drop_accounts.rb

@@ -0,0 +1,17 @@
+class DropAccounts < ActiveRecord::Migration[8.0]
+  def change
+    # Used by the remember me feature
+    drop_table :account_remember_keys, id: false do |t|
+      t.integer :id, primary_key: true
+      t.foreign_key :accounts, column: :id
+      t.string :key, null: false
+      t.datetime :deadline, null: false
+    end
+    drop_table :accounts do |t|
+      t.integer :status, null: false, default: 1
+      t.string :email, null: false
+      t.index :email, unique: true, where: "status IN (1, 2)"
+      t.string :password_hash
+    end
+  end
+end