New Settings Menu, Routes and Controllers Organization (#641)

* Add new settings routes and controllers

* Add new settings view, restructure controllers and routes

* Fix lint errors

app/controllers/accounts_controller.rb

@@ -2,6 +2,18 @@ class AccountsController < ApplicationController
   include Filterable
   before_action :set_account, only: %i[ show update destroy sync ]
 
+  def index
+    @accounts = Current.family.accounts
+  end
+
+  def summary
+    snapshot = Current.family.snapshot(@period)
+    @net_worth_series = snapshot[:net_worth_series]
+    @asset_series = snapshot[:asset_series]
+    @liability_series = snapshot[:liability_series]
+    @account_groups = Current.family.accounts.by_group(period: @period, currency: Current.family.currency)
+  end
+
   def new
     @account = Account.new(
       balance: nil,