diff --git a/Gemfile.lock b/Gemfile.lock
index 60c26f5..5f1a8b4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,40 +9,48 @@ PATH
 GEM
   remote: http://rubygems.org/
   specs:
-    actionmailer (3.2.18)
-      actionpack (= 3.2.18)
-      mail (~> 2.5.4)
-    actionpack (3.2.18)
-      activemodel (= 3.2.18)
-      activesupport (= 3.2.18)
-      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 (~> 1.0.4)
-      rack (~> 1.4.5)
-      rack-cache (~> 1.2)
-      rack-test (~> 0.6.1)
-      sprockets (~> 2.2.1)
-    activemodel (3.2.18)
-      activesupport (= 3.2.18)
-      builder (~> 3.0.0)
-    activerecord (3.2.18)
-      activemodel (= 3.2.18)
-      activesupport (= 3.2.18)
-      arel (~> 3.0.2)
-      tzinfo (~> 0.3.29)
-    activeresource (3.2.18)
-      activemodel (= 3.2.18)
-      activesupport (= 3.2.18)
-    activesupport (3.2.18)
-      i18n (~> 0.6, >= 0.6.4)
-      multi_json (~> 1.0)
-    arel (3.0.3)
-    builder (3.0.4)
+      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)
     celluloid (0.15.2)
       timers (~> 1.1.0)
     coderay (1.1.0)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.1)
+    crass (1.0.5)
     database_cleaner (1.3.0)
     diff-lcs (1.2.5)
     docile (1.1.3)
@@ -54,6 +62,8 @@ GEM
       railties (>= 3.0.0)
     ffi (1.9.3)
     formatador (0.2.5)
+    globalid (0.4.2)
+      activesupport (>= 4.2.0)
     guard (2.6.1)
       formatador (>= 0.2.4)
       listen (~> 2.7)
@@ -63,60 +73,66 @@ GEM
     guard-rspec (4.2.10)
       guard (~> 2.1)
       rspec (>= 2.14, < 4.0)
-    hike (1.2.3)
-    i18n (0.6.9)
-    journey (1.0.4)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jquery-rails (3.1.0)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.1)
     liquid (3.0.6)
     listen (2.7.7)
       celluloid (>= 0.15.2)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
+    loofah (2.3.1)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.5.9)
     lumberjack (1.0.6)
-    mail (2.5.4)
-      mime-types (~> 1.16)
-      treetop (~> 1.4.8)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
     method_source (0.8.2)
-    mime-types (1.25.1)
-    multi_json (1.10.1)
-    polyglot (0.3.5)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
+    minitest (5.13.0)
+    multi_json (1.14.1)
+    nokogiri (1.10.5)
+      mini_portile2 (~> 2.4.0)
     pry (0.10.0)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    rack (1.4.5)
-    rack-cache (1.2)
-      rack (>= 0.4)
+    rack (1.6.11)
     rack-protection (2.0.0)
       rack
-    rack-ssl (1.3.4)
-      rack
-    rack-test (0.6.2)
+    rack-test (0.6.3)
       rack (>= 1.0)
-    rails (3.2.18)
-      actionmailer (= 3.2.18)
-      actionpack (= 3.2.18)
-      activerecord (= 3.2.18)
-      activeresource (= 3.2.18)
-      activesupport (= 3.2.18)
-      bundler (~> 1.0)
-      railties (= 3.2.18)
-    railties (3.2.18)
-      actionpack (= 3.2.18)
-      activesupport (= 3.2.18)
-      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)
-    rake (10.3.2)
+      thor (>= 0.18.1, < 2.0)
+    rake (13.0.0)
     rb-fsevent (0.9.4)
     rb-inotify (0.9.5)
       ffi (>= 0.5.0)
-    rdoc (3.12.2)
-      json (~> 1.4)
     redcarpet (3.2.2)
     redis (3.3.3)
     rspec (3.0.0)
@@ -153,20 +169,20 @@ GEM
     spring (1.1.3)
     spring-commands-rspec (1.0.2)
       spring (>= 0.9.1)
-    sprockets (2.2.2)
-      hike (~> 1.2)
-      multi_json (~> 1.0)
-      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 (1.3.9)
-    thor (0.19.1)
-    tilt (1.4.1)
+    thor (0.20.3)
+    thread_safe (0.3.6)
     timecop (0.7.1)
     timers (1.1.0)
-    treetop (1.4.15)
-      polyglot
-      polyglot (>= 0.3.1)
-    tzinfo (0.3.53)
+    tzinfo (1.2.5)
+      thread_safe (~> 0.1)
     yard (0.8.7.6)
 
 PLATFORMS