FIX: Update vulnerable gems.

Gemfile.lock

@@ -115,6 +115,8 @@ GEM
       railties
     discourse_email_parser (0.6.1)
     docile (1.1.5)
+    domain_name (0.5.25)
+      unf (>= 0.0.5, < 1.0.0)
     dotenv (2.0.2)
     ember-data-source (1.0.0.beta.16.1)
       ember-source (~> 1.8)
@@ -165,6 +167,8 @@ GEM
     hiredis (0.6.0)
     hitimes (1.2.3)
     htmlentities (4.3.4)
+    http-cookie (1.0.2)
+      domain_name (~> 0.5)
     i18n (0.7.0)
     image_optim (0.20.2)
       exifr (~> 1.1, >= 1.1.3)
@@ -175,8 +179,9 @@ GEM
     image_size (1.4.1)
     in_threads (1.3.1)
     jmespath (1.1.3)
-    jquery-rails (3.1.2)
-      railties (>= 3.0, < 5.0)
+    jquery-rails (4.0.5)
+      rails-dom-testing (~> 1.0)
+      railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.3)
     jwt (1.5.1)
@@ -211,7 +216,7 @@ GEM
     multipart-post (2.0.0)
     mustache (1.0.2)
     nenv (0.2.0)
-    netrc (0.10.3)
+    netrc (0.11.0)
     nokogiri (1.6.7.1)
       mini_portile2 (~> 2.0.0.rc2)
     nokogumbo (1.4.1)
@@ -319,7 +324,8 @@ GEM
     redis-namespace (1.5.2)
       redis (~> 3.0, >= 3.0.4)
     ref (2.0.0)
-    rest-client (1.7.2)
+    rest-client (1.8.0)
+      http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
     rinku (1.7.3)
@@ -536,4 +542,4 @@ DEPENDENCIES
   unicorn
 
 BUNDLED WITH
-   1.10.6
+   1.11.2