diff --git a/Gemfile.lock b/Gemfile.lock
index 268829a..4800257 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,91 +7,90 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.2.1)
-      actionpack (= 4.2.1)
-      actionview (= 4.2.1)
-      activejob (= 4.2.1)
+    actionmailer (4.2.11.3)
+      actionpack (= 4.2.11.3)
+      actionview (= 4.2.11.3)
+      activejob (= 4.2.11.3)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.1)
-      actionview (= 4.2.1)
-      activesupport (= 4.2.1)
+    actionpack (4.2.11.3)
+      actionview (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
       rack (~> 1.6)
       rack-test (~> 0.6.2)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    actionview (4.2.1)
-      activesupport (= 4.2.1)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.11.3)
+      activesupport (= 4.2.11.3)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    activejob (4.2.1)
-      activesupport (= 4.2.1)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (4.2.11.3)
+      activesupport (= 4.2.11.3)
       globalid (>= 0.3.0)
-    activemodel (4.2.1)
-      activesupport (= 4.2.1)
+    activemodel (4.2.11.3)
+      activesupport (= 4.2.11.3)
       builder (~> 3.1)
-    activerecord (4.2.1)
-      activemodel (= 4.2.1)
-      activesupport (= 4.2.1)
+    activerecord (4.2.11.3)
+      activemodel (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
       arel (~> 6.0)
-    activesupport (4.2.1)
+    activesupport (4.2.11.3)
       i18n (~> 0.7)
-      json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    arel (6.0.3)
-    builder (3.2.2)
-    concurrent-ruby (1.0.5)
+    arel (6.0.4)
+    builder (3.2.4)
+    concurrent-ruby (1.1.7)
+    crass (1.0.6)
     database_cleaner (1.4.1)
     diff-lcs (1.2.5)
     erubis (2.7.0)
-    globalid (0.4.0)
+    globalid (0.4.2)
       activesupport (>= 4.2.0)
-    i18n (0.7.0)
-    json (1.8.2)
-    loofah (2.0.2)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    loofah (2.6.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.6.6)
-      mime-types (>= 1.16, < 4)
-    mime-types (3.1)
-      mime-types-data (~> 3.2015)
-    mime-types-data (3.2016.0521)
-    mini_portile (0.6.2)
-    minitest (5.6.1)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
+    minitest (5.14.1)
+    nokogiri (1.10.10)
+      mini_portile2 (~> 2.4.0)
     pg (0.18.2)
-    rack (1.6.1)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.1)
-      actionmailer (= 4.2.1)
-      actionpack (= 4.2.1)
-      actionview (= 4.2.1)
-      activejob (= 4.2.1)
-      activemodel (= 4.2.1)
-      activerecord (= 4.2.1)
-      activesupport (= 4.2.1)
+    rails (4.2.11.3)
+      actionmailer (= 4.2.11.3)
+      actionpack (= 4.2.11.3)
+      actionview (= 4.2.11.3)
+      activejob (= 4.2.11.3)
+      activemodel (= 4.2.11.3)
+      activerecord (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.1)
+      railties (= 4.2.11.3)
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.6)
-      activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+    rails-dom-testing (1.0.9)
+      activesupport (>= 4.2.0, < 5.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.2)
-      loofah (~> 2.0)
-    railties (4.2.1)
-      actionpack (= 4.2.1)
-      activesupport (= 4.2.1)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
+    railties (4.2.11.3)
+      actionpack (= 4.2.11.3)
+      activesupport (= 4.2.11.3)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (10.4.2)
+    rake (13.0.1)
     rspec-core (3.2.3)
       rspec-support (~> 3.2.0)
     rspec-expectations (3.2.1)
@@ -115,16 +114,16 @@ GEM
     shoulda-context (1.2.1)
     shoulda-matchers (2.8.0)
       activesupport (>= 3.0.0)
-    sprockets (3.7.1)
+    sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.2.0)
+    sprockets-rails (3.2.1)
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    thor (0.19.1)
-    thread_safe (0.3.5)
-    tzinfo (1.2.2)
+    thor (1.0.1)
+    thread_safe (0.3.6)
+    tzinfo (1.2.7)
       thread_safe (~> 0.1)
 
 PLATFORMS