diff --git a/Gemfile.lock b/Gemfile.lock
index 26fd653..3f5048b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -19,53 +19,53 @@ GEM
   specs:
     aasm (4.12.3)
       concurrent-ruby (~> 1.0)
-    actionmailer (4.2.10)
-      actionpack (= 4.2.10)
-      actionview (= 4.2.10)
-      activejob (= 4.2.10)
+    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 (4.2.10)
-      actionview (= 4.2.10)
-      activesupport (= 4.2.10)
+    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 (4.2.10)
-      activesupport (= 4.2.10)
+    actionview (4.2.11.1)
+      activesupport (= 4.2.11.1)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
-    activejob (4.2.10)
-      activesupport (= 4.2.10)
+    activejob (4.2.11.1)
+      activesupport (= 4.2.11.1)
       globalid (>= 0.3.0)
-    activemodel (4.2.10)
-      activesupport (= 4.2.10)
+    activemodel (4.2.11.1)
+      activesupport (= 4.2.11.1)
       builder (~> 3.1)
-    activerecord (4.2.10)
-      activemodel (= 4.2.10)
-      activesupport (= 4.2.10)
+    activerecord (4.2.11.1)
+      activemodel (= 4.2.11.1)
+      activesupport (= 4.2.11.1)
       arel (~> 6.0)
-    activesupport (4.2.10)
+    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)
+    builder (3.2.4)
     celluloid (0.16.0)
       timers (~> 4.0.0)
     coderay (1.1.2)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.6)
     coveralls (0.8.21)
       json (>= 1.8, < 3)
       simplecov (~> 0.14.1)
       term-ansicolor (~> 1.3)
       thor (~> 0.19.4)
       tins (~> 1.6)
-    crass (1.0.3)
+    crass (1.0.6)
     diff-lcs (1.3)
     docile (1.1.5)
     enumerize (2.2.2)
@@ -78,7 +78,7 @@ GEM
       railties (>= 3.0.0)
     ffi (1.9.23)
     formatador (0.2.5)
-    globalid (0.4.1)
+    globalid (0.4.2)
       activesupport (>= 4.2.0)
     guard (2.7.3)
       formatador (>= 0.2.4)
@@ -99,37 +99,37 @@ GEM
       celluloid (~> 0.16.0)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
-    loofah (2.2.2)
+    loofah (2.4.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     lumberjack (1.0.12)
-    mail (2.7.0)
+    mail (2.7.1)
       mini_mime (>= 0.1.1)
     method_source (0.9.0)
     mime-types (1.25.1)
-    mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
-    minitest (5.11.3)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    mini_mime (1.0.2)
+    mini_portile2 (2.4.0)
+    minitest (5.14.0)
+    nokogiri (1.10.8)
+      mini_portile2 (~> 2.4.0)
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     pry-rails (0.3.2)
       pry (>= 0.9.10)
-    rack (1.6.9)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.10)
-      actionmailer (= 4.2.10)
-      actionpack (= 4.2.10)
-      actionview (= 4.2.10)
-      activejob (= 4.2.10)
-      activemodel (= 4.2.10)
-      activerecord (= 4.2.10)
-      activesupport (= 4.2.10)
+    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 (= 4.2.10)
+      railties (= 4.2.11.1)
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
@@ -137,14 +137,14 @@ GEM
       activesupport (>= 4.2.0, < 5.0)
       nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
-    railties (4.2.10)
-      actionpack (= 4.2.10)
-      activesupport (= 4.2.10)
+    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)
       thor (>= 0.18.1, < 2.0)
-    rake (12.3.1)
+    rake (13.0.1)
     rb-fsevent (0.10.3)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -178,7 +178,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
-    sprockets (3.7.1)
+    sprockets (4.0.0)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.1)
@@ -193,7 +193,7 @@ GEM
     timers (4.0.4)
       hitimes
     tins (1.16.3)
-    tzinfo (1.2.5)
+    tzinfo (1.2.6)
       thread_safe (~> 0.1)
 
 PLATFORMS