Simplify JS init

There is no controller specific code

app/assets/javascripts/init.coffee

@@ -1,12 +1,5 @@
-# Based on the blog post "Turbolinks — How to organize your Javascript code"
-# https://medium.com/@coorasse/turbolinks-how-to-organize-your-javascript-code-df83d59c0886
-
 class @Init
   constructor: ->
-    @startup_modules()
-    @startup_controller_specific_code()
-
-  startup_modules: ->
     new AhoyTracker()
 
     # Forms
@@ -21,11 +14,5 @@ class @Init
     new TooltipEnabler()
     new Autocomplete()
 
-  startup_controller_specific_code: ->
-    klass_name = $('body').data('js-class')
-    if 'function' is typeof window[klass_name]
-      klass = window[klass_name]
-      new klass()
-
 $(document).on 'turbolinks:load', ->
   new Init()

app/controllers/application_controller.rb

@@ -11,10 +11,6 @@ class ApplicationController < ActionController::Base
 
   protect_from_forgery with: :exception
 
-  helper_method def body_js_class
-    @body_js_class ||= [ controller_name.camelcase, action_name.camelcase ].join
-  end
-
   helper_method def title(value = nil)
     if value
       @title = value

app/views/layouts/application.html.slim

@@ -11,7 +11,7 @@ html[lang="en"]
     = stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track': 'reload'
     = javascript_include_tag 'application', 'data-turbolinks-track': 'reload'
 
-  body data-js-class=body_js_class
+  body
     = render 'layouts/navbar'
 
     #main

spec/controllers/application_controller_spec.rb

@@ -9,13 +9,6 @@ def index
     end
   end
 
-  describe '#body_js_class' do
-    it "should named by controller_name and action_name" do
-      get :index
-      expect(controller.body_js_class).to eq('DummiesIndex')
-    end
-  end
-
   describe '#title' do
     it 'returns nil per default' do
       expect(subject.title).to eq(nil)

spec/views/layouts/application.html.slim_spec.rb

@@ -3,16 +3,11 @@
 describe 'layouts/application' do
   before :each do
     without_partial_double_verification do
-      allow(view).to receive(:body_js_class).and_return('ControllerAction')
       allow(view).to receive(:title).and_return('We have a title')
     end
     render
   end
 
-  it "should render body tag with data attribute" do
-    expect(rendered).to have_selector('body[data-js-class=ControllerAction]')
-  end
-
   it "should render title tag" do
     expect(rendered).to have_title('We have a title :: DockerRails')
   end