diff --git a/Gemfile.lock b/Gemfile.lock
index f2a41c99..f3c20284 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -88,7 +88,7 @@ GEM
     bugsnag (1.8.4)
       httparty (>= 0.6, < 1.0)
       multi_json (~> 1.0)
-    builder (3.2.2)
+    builder (3.2.4)
     byebug (2.7.0)
       columnize (~> 0.3)
       debugger-linecache (~> 1.2)
@@ -113,12 +113,14 @@ GEM
     coderay (1.1.0)
     coffee-script-source (1.8.0)
     columnize (0.8.9)
+    concurrent-ruby (1.1.8)
     confyio (1.2.0)
       faraday (>= 0.9.0)
       json (>= 1.7.7)
     connection_pool (2.1.1)
     crack (0.4.2)
       safe_yaml (~> 1.0.0)
+    crass (1.0.6)
     css_parser (1.3.5)
       addressable
     curb (0.8.6)
@@ -172,8 +174,8 @@ GEM
       rack
     friendly_id (5.0.3)
       activerecord (>= 4.0.0)
-    globalid (0.3.3)
-      activesupport (>= 4.1.0)
+    globalid (0.4.2)
+      activesupport (>= 4.2.0)
     hashie (2.0.5)
     hike (1.2.3)
     htmlentities (4.3.3)
@@ -181,34 +183,39 @@ GEM
       json (~> 1.8)
       multi_xml (>= 0.5.2)
     httpclient (2.3.4.1)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     jasmine-core (2.0.0)
     jquery-rails (3.1.0)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.2)
+    json (1.8.6)
     json_spec (1.1.4)
       multi_json (~> 1.0)
       rspec (>= 2.0, < 4.0)
     jwt (0.1.11)
       multi_json (>= 1.5)
-    loofah (2.0.1)
+    loofah (2.9.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
+    mail (2.7.1)
+      mini_mime (>= 0.1.1)
     medium-editor-rails (0.9.1)
     method_source (0.8.2)
-    mime-types (1.25.1)
+    mime-types (3.3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2021.0225)
     mini_magick (3.7.0)
       subexec (~> 0.2.1)
-    mini_portile (0.6.2)
-    minitest (5.5.1)
+    mini_mime (1.1.0)
+    mini_portile2 (2.4.0)
+    minitest (5.12.0)
     multi_json (1.10.1)
     multi_xml (0.5.5)
     multipart-post (2.0.0)
     newrelic_rpm (3.6.8.168)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.9.1)
+      mini_portile2 (~> 2.4.0)
     oauth2 (0.9.3)
       faraday (>= 0.8, < 0.10)
       jwt (~> 0.1.8)
@@ -247,7 +254,7 @@ GEM
       signature (~> 0.1.6)
     quiet_assets (1.0.2)
       railties (>= 3.1, < 5.0)
-    rack (1.6.0)
+    rack (1.6.13)
     rack-protection (1.5.2)
       rack
     rack-test (0.6.3)
@@ -271,14 +278,14 @@ GEM
     rails-assets-js-md5 (1.1.0)
     rails-assets-moment (2.9.0)
     rails-assets-showdown (0.4.0)
-    rails-deprecated_sanitizer (1.0.3)
+    rails-deprecated_sanitizer (1.0.4)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.5)
-      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 (1.0.1)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     rails_12factor (0.0.3)
       rails_serve_static_assets
       rails_stdout_logging
@@ -367,11 +374,11 @@ GEM
     subexec (0.2.3)
     temple (0.6.7)
     thor (0.19.1)
-    thread_safe (0.3.4)
+    thread_safe (0.3.6)
     tilt (1.4.1)
     timecop (0.6.3)
     timers (1.1.0)
-    tzinfo (1.2.2)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     uglifier (2.4.0)
       execjs (>= 0.3.0)
@@ -388,7 +395,7 @@ GEM
       addressable (>= 2.2.7)
       crack (>= 0.3.2)
     websocket-driver (0.3.3)
-    xpath (2.0.0)
+    xpath (2.1.0)
       nokogiri (~> 1.3)
 
 PLATFORMS