updates minor gem versions

Gemfile

@@ -7,7 +7,7 @@ gem 'pg', '~> 0.19.0'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0', '>= 5.0.4'
 # Use Uglifier as compressor for JavaScript assets
-gem 'uglifier', '>= 3.0.4'
+gem 'uglifier', '~> 3.1.6'
 # Use CoffeeScript for .coffee assets and views
 gem 'coffee-rails', '~> 4.2.1'
 # See https://github.com/rails/execjs#readme for more supported runtimes
@@ -40,11 +40,11 @@ gem 'foundation_rails_helper', '~> 2.0.0'
 gem 'acts_as_votable'
 gem 'ckeditor', '~> 4.2.2'
 gem 'invisible_captcha', '~> 0.9.2'
-gem 'cancancan'
+gem 'cancancan', '~> 1.16.0'
 gem 'social-share-button'
 gem 'initialjs-rails', '0.2.0.4'
 gem 'unicorn', '~> 5.2.0'
-gem 'paranoia', '~> 2.2.0'
+gem 'paranoia', '~> 2.2.1'
 gem 'rinku', '~> 2.0.2', require: 'rails_rinku'
 gem 'savon'
 gem 'dalli'
@@ -52,18 +52,18 @@ gem 'rollbar', '~> 2.14.0'
 gem 'delayed_job_active_record', '~> 4.1.0'
 gem 'daemons'
 gem 'devise-async'
-gem 'newrelic_rpm', '~> 3.17.2.327'
+gem 'newrelic_rpm', '~> 3.18.1.330'
 gem 'whenever', require: false
 gem 'pg_search'
-gem 'sitemap_generator'
+gem 'sitemap_generator', '~> 5.3.1'
 
 gem 'ahoy_matey', '~> 1.5.3'
-gem 'groupdate', '~> 3.1.0' # group temporary data
+gem 'groupdate', '~> 3.2.0' # group temporary data
 gem 'tolk', '~> 2.0.0' # Web interface for translations
 
 gem 'browser'
 gem 'turnout', '~> 2.4.0'
-gem 'redcarpet'
+gem 'redcarpet', '~> 3.4.0'
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
@@ -72,28 +72,28 @@ group :development, :test do
   gem 'spring'
   gem 'spring-commands-rspec'
   gem 'rspec-rails', '~> 3.5'
-  gem 'capybara'
-  gem 'factory_girl_rails'
+  gem 'capybara', '~> 2.12.1'
+  gem 'factory_girl_rails', '~> 4.8.0'
   gem 'fuubar'
   gem 'launchy'
   gem 'quiet_assets'
-  gem 'letter_opener_web', '~> 1.3.0'
-  gem 'i18n-tasks'
-  gem 'capistrano', '3.5.0',           require: false
+  gem 'letter_opener_web', '~> 1.3.1'
+  gem 'i18n-tasks', '~> 0.9.12'
+  gem 'capistrano', '~> 3.7.2',           require: false
   gem 'capistrano-bundler', '~> 1.2',  require: false
-  gem "capistrano-rails", '1.1.8',     require: false
+  gem "capistrano-rails", '~> 1.2.3',     require: false
   gem 'rvm1-capistrano3',              require: false
-  gem 'capistrano3-delayed-job', '~> 1.0'
-  gem "bullet"
-  gem "faker"
-  gem 'rubocop', '~> 0.45.0', require: false
+  gem 'capistrano3-delayed-job', '~> 1.7.3'
+  gem "bullet", '~> 5.5.1'
+  gem "faker", '~> 1.7.3'
+  gem 'rubocop', '~> 0.47.1', require: false
   gem 'knapsack'
 end
 
 group :test do
   gem 'database_cleaner'
-  gem 'poltergeist'
-  gem 'coveralls', require: false
+  gem 'poltergeist', '~> 1.13.0'
+  gem 'coveralls', '~> 0.8.19', require: false
   gem 'email_spec'
 end