Add support for manual recurring transaction creation (#311)

* Support manual recurring

* Automatic variance calc

* Automatic variance update

* Tooltip for manual

* Review

* Fix variance calculations

Manual recurring updates collapse occurrence tracking when amounts repeat

* Proper Bigdecimal calcs

* Fix n+1 query

* Nicer UI errors.

* Style

---------

Signed-off-by: Juan José Mata <juanjo.mata@gmail.com>
Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>

config/routes.rb

@@ -153,6 +153,10 @@ Rails.application.routes.draw do
     collection do
       delete :clear_filter
     end
+
+    member do
+      post :mark_as_recurring
+    end
   end
 
   resources :recurring_transactions, only: %i[index destroy] do