diff --git a/Gemfile.lock b/Gemfile.lock
index 489c597..e876e00 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,78 +7,93 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    actionmailer (3.2.6)
-      actionpack (= 3.2.6)
-      mail (~> 2.4.4)
-    actionpack (3.2.6)
-      activemodel (= 3.2.6)
-      activesupport (= 3.2.6)
-      builder (~> 3.0.0)
+    actionmailer (4.2.11.1)
+      actionpack (= 4.2.11.1)
+      actionview (= 4.2.11.1)
+      activejob (= 4.2.11.1)
+      mail (~> 2.5, >= 2.5.4)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+    actionpack (4.2.11.1)
+      actionview (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
+      rack (~> 1.6)
+      rack-test (~> 0.6.2)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.11.1)
+      activesupport (= 4.2.11.1)
+      builder (~> 3.1)
       erubis (~> 2.7.0)
-      journey (~> 1.0.1)
-      rack (~> 1.4.0)
-      rack-cache (~> 1.2)
-      rack-test (~> 0.6.1)
-      sprockets (~> 2.1.3)
-    activemodel (3.2.6)
-      activesupport (= 3.2.6)
-      builder (~> 3.0.0)
-    activerecord (3.2.6)
-      activemodel (= 3.2.6)
-      activesupport (= 3.2.6)
-      arel (~> 3.0.2)
-      tzinfo (~> 0.3.29)
-    activeresource (3.2.6)
-      activemodel (= 3.2.6)
-      activesupport (= 3.2.6)
-    activesupport (3.2.6)
-      i18n (~> 0.6)
-      multi_json (~> 1.0)
-    arel (3.0.3)
-    builder (3.0.0)
+      rails-dom-testing (~> 1.0, >= 1.0.5)
+      rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    activejob (4.2.11.1)
+      activesupport (= 4.2.11.1)
+      globalid (>= 0.3.0)
+    activemodel (4.2.11.1)
+      activesupport (= 4.2.11.1)
+      builder (~> 3.1)
+    activerecord (4.2.11.1)
+      activemodel (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
+      arel (~> 6.0)
+    activesupport (4.2.11.1)
+      i18n (~> 0.7)
+      minitest (~> 5.1)
+      thread_safe (~> 0.3, >= 0.3.4)
+      tzinfo (~> 1.1)
+    arel (6.0.4)
+    builder (3.2.3)
+    concurrent-ruby (1.1.5)
+    crass (1.0.5)
     diff-lcs (1.1.3)
     erubis (2.7.0)
     factory_girl (3.4.1)
       activesupport (>= 3.0.0)
-    hike (1.2.1)
-    i18n (0.6.0)
-    journey (1.0.4)
+    globalid (0.4.2)
+      activesupport (>= 4.2.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (2.0.2)
       railties (>= 3.2.0, < 5.0)
       thor (~> 0.14)
-    json (1.7.3)
-    mail (2.4.4)
-      i18n (>= 0.4.0)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
-    mime-types (1.25.1)
-    multi_json (1.3.6)
-    polyglot (0.3.5)
-    rack (1.4.1)
-    rack-cache (1.2)
-      rack (>= 0.4)
-    rack-ssl (1.3.2)
-      rack
-    rack-test (0.6.1)
+    loofah (2.3.0)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
+    minitest (5.12.2)
+    nokogiri (1.10.4)
+      mini_portile2 (~> 2.4.0)
+    rack (1.6.11)
+    rack-test (0.6.3)
       rack (>= 1.0)
-    rails (3.2.6)
-      actionmailer (= 3.2.6)
-      actionpack (= 3.2.6)
-      activerecord (= 3.2.6)
-      activeresource (= 3.2.6)
-      activesupport (= 3.2.6)
-      bundler (~> 1.0)
-      railties (= 3.2.6)
-    railties (3.2.6)
-      actionpack (= 3.2.6)
-      activesupport (= 3.2.6)
-      rack-ssl (~> 1.3.2)
+    rails (4.2.11.1)
+      actionmailer (= 4.2.11.1)
+      actionpack (= 4.2.11.1)
+      actionview (= 4.2.11.1)
+      activejob (= 4.2.11.1)
+      activemodel (= 4.2.11.1)
+      activerecord (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
+      bundler (>= 1.3.0, < 2.0)
+      railties (= 4.2.11.1)
+      sprockets-rails
+    rails-deprecated_sanitizer (1.0.3)
+      activesupport (>= 4.2.0.alpha)
+    rails-dom-testing (1.0.9)
+      activesupport (>= 4.2.0, < 5.0)
+      nokogiri (~> 1.6)
+      rails-deprecated_sanitizer (>= 1.0.1)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
+    railties (4.2.11.1)
+      actionpack (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       rake (>= 0.8.7)
-      rdoc (~> 3.4)
-      thor (>= 0.14.6, < 2.0)
+      thor (>= 0.18.1, < 2.0)
     rake (0.9.2.2)
-    rdoc (3.12)
-      json (~> 1.4)
     rspec (2.10.0)
       rspec-core (~> 2.10.0)
       rspec-expectations (~> 2.10.0)
@@ -92,17 +107,18 @@ GEM
       activesupport (>= 3.0)
       railties (>= 3.0)
       rspec (~> 2.10.0)
-    sprockets (2.1.3)
-      hike (~> 1.2)
-      rack (~> 1.0)
-      tilt (~> 1.1, != 1.3.0)
+    sprockets (4.0.0)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.2.1)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
     sqlite3 (1.3.6)
-    thor (0.15.3)
-    tilt (1.3.3)
-    treetop (1.4.15)
-      polyglot
-      polyglot (>= 0.3.1)
-    tzinfo (0.3.42)
+    thor (0.20.3)
+    thread_safe (0.3.6)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
 
 PLATFORMS
   ruby