Bump nokogiri from 1.6.7.2 to 1.9.1

Gemfile.lock

@@ -80,7 +80,7 @@ GEM
       sass (~> 3.0)
       slim (>= 1.3.6, < 4.0)
       terminal-table (~> 1.4)
-    builder (3.2.2)
+    builder (3.2.4)
     bullet (5.0.0)
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.9.0)
@@ -114,6 +114,7 @@ GEM
     coffee-script-source (1.10.0)
     commonjs (0.2.7)
     concurrent-ruby (1.0.1)
+    crass (1.0.6)
     daemons (1.2.3)
     debug_inspector (0.0.2)
     deep_merge (1.0.1)
@@ -182,7 +183,8 @@ GEM
     http-cookie (1.0.2)
       domain_name (~> 0.5)
     http_accept_language (2.0.5)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     i18n-country-translations (1.2.3)
       i18n (~> 0.5)
       railties (>= 3.0)
@@ -198,7 +200,7 @@ GEM
       turbolinks
     jquery-ui-rails (5.0.5)
       railties (>= 3.2.16)
-    json (1.8.3)
+    json (1.8.6)
     jwt (1.5.1)
     kaminari (0.16.3)
       actionpack (>= 3.0.0)
@@ -220,7 +222,8 @@ GEM
       celluloid (~> 0.16.0)
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
-    loofah (2.0.3)
+    loofah (2.9.0)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.4)
       mime-types (>= 1.16, < 4)
@@ -233,7 +236,7 @@ GEM
       mail (>= 2.0.3)
       maildir (>= 0.5.0)
     mime-types (2.99.1)
-    mini_portile2 (2.0.0)
+    mini_portile2 (2.4.0)
     minitest (5.8.4)
     minitest-reporters (1.1.8)
       ansi
@@ -245,8 +248,8 @@ GEM
     multipart-post (2.0.0)
     netrc (0.11.0)
     newrelic_rpm (3.15.1.316)
-    nokogiri (1.6.7.2)
-      mini_portile2 (~> 2.0.0.rc2)
+    nokogiri (1.9.1)
+      mini_portile2 (~> 2.4.0)
     oauth (0.5.1)
     oauth2 (1.1.0)
       faraday (>= 0.8, < 0.10)
@@ -292,7 +295,7 @@ GEM
     powerpack (0.1.1)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.6)
@@ -306,14 +309,14 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 4.2.6)
       sprockets-rails
-    rails-deprecated_sanitizer (1.0.3)
+    rails-deprecated_sanitizer (1.0.4)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
-      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 (1.0.3)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     rails-i18n (4.0.8)
       i18n (~> 0.7)
       railties (~> 4.0)
@@ -427,7 +430,7 @@ GEM
     temple (0.7.6)
     terminal-table (1.5.2)
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.2)
     timecop (0.8.1)
     timers (4.0.4)
@@ -442,7 +445,7 @@ GEM
       less-rails (>= 2.5.0)
       railties (>= 3.1)
     twitter-bootstrap-rails-confirm (1.0.5)
-    tzinfo (1.2.2)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     uglifier (3.0.0)
       execjs (>= 0.3.0, < 3)
@@ -462,7 +465,7 @@ GEM
       railties (>= 4.0)
       sprockets-rails (>= 2.0, < 4.0)
     websocket (1.2.3)
-    xpath (2.0.0)
+    xpath (2.1.0)
       nokogiri (~> 1.3)
 
 PLATFORMS