Fix most rubocop issues (#2165)

* Run rubocop --autocorrect on app/, config/ and lib/, also manually fix some remaining style issues

* Run rubocop --autocorrect-all on db/

* Run rubocop --autocorrect-all on `spec/` and fix remaining issues

app/controllers/auth/confirmations_controller.rb

@@ -15,12 +15,6 @@ class Auth::ConfirmationsController < Devise::ConfirmationsController
 
   skip_before_action :require_functional!
 
-  def new
-    super
-
-    resource.email = current_user.unconfirmed_email || current_user.email if user_signed_in?
-  end
-
   def show
     old_session_values = session.to_hash
     reset_session
@@ -29,6 +23,12 @@ class Auth::ConfirmationsController < Devise::ConfirmationsController
     super
   end
 
+  def new
+    super
+
+    resource.email = current_user.unconfirmed_email || current_user.email if user_signed_in?
+  end
+
   def confirm_captcha
     check_captcha! do |message|
       flash.now[:alert] = message
@@ -51,6 +51,7 @@ class Auth::ConfirmationsController < Devise::ConfirmationsController
     # step.
     confirmation_token = params[:confirmation_token]
     return if confirmation_token.nil?
+
     @confirmation_user = User.find_first_by_auth_conditions(confirmation_token: confirmation_token)
   end