Bump capybara to 2.14.0

Bumps [capybara](https://github.com/teamcapybara/capybara) from 2.7.1 to 2.14.0.
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](teamcapybara/capybara@v2.7.1...v2.14.0)

Gemfile.lock

@@ -36,7 +36,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
+    addressable (2.5.1)
+      public_suffix (~> 2.0, >= 2.0.2)
     appconfig (0.1.1)
     arel (6.0.3)
     array_is_uniq (0.0.1)
@@ -50,7 +51,7 @@ GEM
     bootstrap-on-rails (3.3.1)
       less-rails
     builder (3.2.2)
-    capybara (2.7.1)
+    capybara (2.14.0)
       addressable
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
@@ -158,25 +159,24 @@ GEM
     multi_json (1.12.1)
     multi_test (0.1.2)
     newrelic_rpm (3.16.0.318)
-    nokogiri (1.6.8)
+    nokogiri (1.6.8.1)
       mini_portile2 (~> 2.1.0)
-      pkg-config (~> 1.1.7)
     open_uri_redirections (0.2.1)
     parser (2.3.1.2)
       ast (~> 2.2)
     pg (0.18.4)
-    pkg-config (1.1.7)
     pluralize_no_count_if_one (0.0.1)
       railties
     poltergeist (1.10.0)
       capybara (~> 2.1)
       cliver (~> 0.3.1)
       websocket-driver (>= 0.2.0)
     powerpack (0.1.1)
+    public_suffix (2.0.5)
     puma (3.6.0)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
-    rack (1.6.4)
+    rack (1.6.8)
     rack-protection (1.5.3)
       rack
     rack-test (0.6.3)
@@ -320,7 +320,7 @@ GEM
     websocket-driver (0.6.4)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.2)
-    xpath (2.0.0)
+    xpath (2.1.0)
       nokogiri (~> 1.3)
     yard (0.9.5)