Ruby on Rails

Hello. I need some help with pipeline. I try build application with openlayer3. I compile ol.js. I put ol.js to /assets/javascripts/ . If I use 

<%= javascript_include_tag "application", "data-turbolinks-track" => true %>

in  app\views\layouts\application.html.erb, I can see the map in my pages, but if i delete this line from file i can't see map. Why this happend?

And another problem. I use bootstrap. I try create dropdown menu. I use:

<li id="fat-menu" class="dropdown">

               <a href="#" class="dropdown-toggle" data-toggle="dropdown">

                 Account <b class="caret"></b>

               </a>

               <ul class="dropdown-menu">

                 <li><%= link_to "Profile", current_user %></li>

                 <li><%= link_to "Settings", '#' %></li>

                 <li class="divider"></li>

                 <li>

                   <%= link_to "Sign out", signout_path, method: "delete" %>

                 </li>

               </ul>

             </li>

but menu don't work. I start rails server, then press Account and do nothing. I think don't work js path of bootstrap. But I add //= bootstrap in application.js . What I do wrong?

Gemfile:

source 'https://rubygems.org'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'

gem 'rails', '4.0.2'

gem 'bootstrap-sass', '2.3.2'

gem 'bcrypt-ruby', '3.1.2'

# Use PostgresSQL for records

gem 'pg', '0.15.1'

group :development, :test do

  gem 'rspec-rails', '2.13.1'

end

group :test do

  gem 'selenium-webdriver', '2.35.1'

  gem 'capybara', '2.1.0'

  gem 'factory_girl_rails', '4.2.1'

end

# Use SCSS for stylesheets

gem 'sass-rails', '~> 4.0.0'

# Use Uglifier as compressor for JavaScript assets

gem 'uglifier', '>= 1.3.0'

# Use CoffeeScript for .js.coffee assets and views

gem 'coffee-rails', '~> 4.0.0'

# See https://github.com/sstephenson/execjs#readme for more supported runtimes

# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library

gem 'jquery-rails'

# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks

gem 'turbolinks'

# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder

gem 'jbuilder', '~> 1.2'

group :doc do

  # bundle exec rake doc:rails generates the API under doc/api.

  gem 'sdoc', require: false

end

group :production do

  gem 'rails_12factor', '0.0.2'

end

# Use ActiveModel has_secure_password

# gem 'bcrypt-ruby', '~> 3.1.2'

# Use unicorn as the app server

# gem 'unicorn'

# Use Capistrano for deployment

# gem 'capistrano', group: :development

# Use debugger

# gem 'debugger', group: [:development, :test]

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