diff --git a/Gemfile.lock b/Gemfile.lock
index 268829a..201043f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,28 +43,31 @@ GEM
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
     arel (6.0.3)
-    builder (3.2.2)
+    builder (3.2.4)
     concurrent-ruby (1.0.5)
+    crass (1.0.6)
     database_cleaner (1.4.1)
-    diff-lcs (1.2.5)
+    diff-lcs (1.4.4)
     erubis (2.7.0)
     globalid (0.4.0)
       activesupport (>= 4.2.0)
-    i18n (0.7.0)
-    json (1.8.2)
-    loofah (2.0.2)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
+    json (1.8.6)
+    loofah (2.8.0)
+      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)
+    mini_portile2 (2.4.0)
+    minitest (5.14.2)
+    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)
@@ -80,35 +83,35 @@ GEM
       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)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     railties (4.2.1)
       actionpack (= 4.2.1)
       activesupport (= 4.2.1)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (10.4.2)
-    rspec-core (3.2.3)
-      rspec-support (~> 3.2.0)
-    rspec-expectations (3.2.1)
+    rake (13.0.3)
+    rspec-core (3.10.1)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.1)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-mocks (3.2.1)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.2.0)
-    rspec-rails (3.2.1)
-      actionpack (>= 3.0, < 4.3)
-      activesupport (>= 3.0, < 4.3)
-      railties (>= 3.0, < 4.3)
-      rspec-core (~> 3.2.0)
-      rspec-expectations (~> 3.2.0)
-      rspec-mocks (~> 3.2.0)
-      rspec-support (~> 3.2.0)
-    rspec-support (3.2.2)
+      rspec-support (~> 3.10.0)
+    rspec-rails (4.0.2)
+      actionpack (>= 4.2)
+      activesupport (>= 4.2)
+      railties (>= 4.2)
+      rspec-core (~> 3.10)
+      rspec-expectations (~> 3.10)
+      rspec-mocks (~> 3.10)
+      rspec-support (~> 3.10)
+    rspec-support (3.10.1)
     shoulda (3.5.0)
       shoulda-context (~> 1.0, >= 1.0.1)
       shoulda-matchers (>= 1.4.1, < 3.0)
@@ -122,9 +125,9 @@ GEM
       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 (1.2.9)
       thread_safe (~> 0.1)
 
 PLATFORMS