chore: rubocop

chore: fix api test conventions

chore: rubocop -A spec/

chore: more rubocop -A

fix failing test

rubocop fixes

removes helper methods that are in my opinion dead code

more rubocop fixes

rubocop -a --auto-gen-config

app/controllers/finance/ordergroups_controller.rb

@@ -1,11 +1,11 @@
 class Finance::OrdergroupsController < Finance::BaseController
   def index
-    m = /^(?<col>name|sum_of_class_\d+)(?<reverse>_reverse)?$/.match params["sort"]
+    m = /^(?<col>name|sum_of_class_\d+)(?<reverse>_reverse)?$/.match params['sort']
     if m
       sort = m[:col]
       sort += ' DESC' if m[:reverse]
     else
-      sort = "name"
+      sort = 'name'
     end
 
     @ordergroups = Ordergroup.undeleted.order(sort)