Bump selenium-webdriver to 3.5.0 to make Capybara work properly

Gemfile

@@ -333,7 +333,7 @@ group :development, :test do
 
   gem 'capybara', '~> 2.15'
   gem 'capybara-screenshot', '~> 1.0.0'
-  gem 'selenium-webdriver', '~> 2.53'
+  gem 'selenium-webdriver', '~> 3.5'
 
   gem 'spring', '~> 2.0.0'
   gem 'spring-commands-rspec', '~> 1.0.4'

Gemfile.lock

@@ -778,10 +778,9 @@ GEM
       activesupport (>= 3.1)
     select2-rails (3.5.9.3)
       thor (~> 0.14)
-    selenium-webdriver (2.53.4)
+    selenium-webdriver (3.5.0)
       childprocess (~> 0.5)
       rubyzip (~> 1.0)
-      websocket (~> 1.0)
     sentry-raven (2.5.3)
       faraday (>= 0.7.6, < 1.0)
     settingslogic (2.0.9)
@@ -903,7 +902,6 @@ GEM
       hashdiff
     webpack-rails (0.9.10)
       railties (>= 3.2.0)
-    websocket (1.2.4)
     wikicloth (0.8.1)
       builder
       expression_parser
@@ -1100,7 +1098,7 @@ DEPENDENCIES
   scss_lint (~> 0.54.0)
   seed-fu (~> 2.3.5)
   select2-rails (~> 3.5.9)
-  selenium-webdriver (~> 2.53)
+  selenium-webdriver (~> 3.5)
   sentry-raven (~> 2.5.3)
   settingslogic (~> 2.0.9)
   sham_rack (~> 1.3.6)

features/support/capybara.rb

@@ -6,7 +6,7 @@ timeout = (ENV['CI'] || ENV['CI_SERVER']) ? 60 : 30
 Capybara.javascript_driver = :chrome
 Capybara.register_driver :chrome do |app|
   capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
-    'chromeOptions' => {
+    chromeOptions: {
       'args' => %w[headless no-sandbox disable-gpu --window-size=1240,1400]
     }
   )

spec/support/capybara.rb

@@ -10,7 +10,7 @@ timeout = (ENV['CI'] || ENV['CI_SERVER']) ? 60 : 30
 Capybara.javascript_driver = :chrome
 Capybara.register_driver :chrome do |app|
   capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
-    'chromeOptions' => {
+    chromeOptions: {
       'args' => %w[headless no-sandbox disable-gpu --window-size=1240,1400]
     }
   )