Add specifiy version to multiple gems that didn't had one at the Gemfile

Gemfile

@@ -17,7 +17,7 @@ gem 'coffee-rails', '~> 4.2.1'
 gem 'jquery-rails', '~> 4.3.1'
 gem 'jquery-ui-rails'
 # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
-gem 'turbolinks'
+gem 'turbolinks', '~> 2.5.3'
 
 # Fix sprockets on the
 gem 'sprockets', '~> 3.7.1'
@@ -33,7 +33,7 @@ gem 'omniauth-google-oauth2', '~> 0.4.0'
 
 gem 'kaminari', '~> 1.0.1'
 gem 'ancestry', '~> 2.2.2'
-gem 'acts-as-taggable-on'
+gem 'acts-as-taggable-on', '~> 4.0.0'
 gem 'responders', '~> 2.4.0'
 gem 'foundation-rails', '~> 6.2.4.0'
 gem 'foundation_rails_helper', '~> 2.0.0'
@@ -61,7 +61,7 @@ gem 'ahoy_matey', '~> 1.6.0'
 gem 'groupdate', '~> 3.2.0' # group temporary data
 gem 'tolk', '~> 2.0.0' # Web interface for translations
 
-gem 'browser'
+gem 'browser', '~> 2.3.0'
 gem 'turnout', '~> 2.4.0'
 gem 'redcarpet', '~> 3.4.0'
 gem 'rubyzip', '~> 1.2.0'
@@ -72,7 +72,7 @@ group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug'
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
-  gem 'spring'
+  gem 'spring', '~> 2.0.1'
   gem 'spring-commands-rspec'
   gem 'rspec-rails', '~> 3.6'
   gem 'capybara', '~> 2.14.0'
@@ -94,10 +94,10 @@ group :development, :test do
 end
 
 group :test do
-  gem 'database_cleaner'
+  gem 'database_cleaner', '~> 1.5.3'
   gem 'poltergeist', '~> 1.15.0'
   gem 'coveralls', '~> 0.8.21', require: false
-  gem 'email_spec'
+  gem 'email_spec', '~> 2.1.0'
 end
 
 group :development do

Gemfile.lock

@@ -35,8 +35,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    acts-as-taggable-on (5.0.0)
-      activerecord (>= 4.2.8)
+    acts-as-taggable-on (4.0.0)
+      activerecord (>= 4.0)
     acts_as_votable (0.10.0)
     addressable (2.5.1)
       public_suffix (~> 2.0, >= 2.0.2)
@@ -65,7 +65,7 @@ GEM
       babel-source (>= 4.0, < 6)
       execjs (~> 2.0)
     bcrypt (3.1.11)
-    browser (2.4.0)
+    browser (2.3.0)
     builder (3.2.3)
     bullet (5.5.1)
       activesupport (>= 3.0.0)
@@ -117,7 +117,7 @@ GEM
       tins (~> 1.6)
     daemons (1.2.4)
     dalli (2.7.6)
-    database_cleaner (1.6.1)
+    database_cleaner (1.5.3)
     debug_inspector (0.0.3)
     delayed_job (4.1.2)
       activesupport (>= 3.0, < 5.1)
@@ -432,9 +432,8 @@ GEM
     tolk (2.0.0)
       rails (>= 4.0)
       safe_yaml (>= 0.8.6)
-    turbolinks (5.0.1)
-      turbolinks-source (~> 5)
-    turbolinks-source (5.0.3)
+    turbolinks (2.5.3)
+      coffee-rails
     turnout (2.4.0)
       i18n (~> 0.7)
       rack (>= 1.3, < 3)
@@ -472,11 +471,11 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  acts-as-taggable-on
+  acts-as-taggable-on (~> 4.0.0)
   acts_as_votable
   ahoy_matey (~> 1.6.0)
   ancestry (~> 2.2.2)
-  browser
+  browser (~> 2.3.0)
   bullet (~> 5.5.1)
   byebug
   cancancan (~> 1.16.0)
@@ -490,12 +489,12 @@ DEPENDENCIES
   coveralls (~> 0.8.21)
   daemons
   dalli
-  database_cleaner
+  database_cleaner (~> 1.5.3)
   delayed_job_active_record (~> 4.1.0)
   devise (~> 3.5.7)
   devise-async
   devise_security_extension
-  email_spec
+  email_spec (~> 2.1.0)
   factory_girl_rails (~> 4.8.0)
   faker (~> 1.7.3)
   foundation-rails (~> 6.2.4.0)
@@ -535,11 +534,11 @@ DEPENDENCIES
   savon
   sitemap_generator (~> 5.3.1)
   social-share-button (~> 0.10)
-  spring
+  spring (~> 2.0.1)
   spring-commands-rspec
   sprockets (~> 3.7.1)
   tolk (~> 2.0.0)
-  turbolinks
+  turbolinks (~> 2.5.3)
   turnout (~> 2.4.0)
   uglifier (~> 3.2.0)
   unicorn (~> 5.3.0)