diff --git a/Gemfile b/Gemfile
index 10c26f3..ef65fc5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -44,7 +44,7 @@ group :development do
   gem 'spring-commands-rspec'
   gem 'quiet_assets'
   gem 'awesome_print'
-  gem 'guard-rspec', require: false
+  # gem 'guard-rspec', require: false
   # gem 'terminal-notifier-guard' # FIXME cross-platform
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 8fdeeae..570497e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,46 +1,46 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    actionmailer (4.2.1)
-      actionpack (= 4.2.1)
-      actionview (= 4.2.1)
-      activejob (= 4.2.1)
+    actionmailer (4.2.6)
+      actionpack (= 4.2.6)
+      actionview (= 4.2.6)
+      activejob (= 4.2.6)
       mail (~> 2.5, >= 2.5.4)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-    actionpack (4.2.1)
-      actionview (= 4.2.1)
-      activesupport (= 4.2.1)
+    actionpack (4.2.6)
+      actionview (= 4.2.6)
+      activesupport (= 4.2.6)
       rack (~> 1.6)
       rack-test (~> 0.6.2)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    actionview (4.2.1)
-      activesupport (= 4.2.1)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    actionview (4.2.6)
+      activesupport (= 4.2.6)
       builder (~> 3.1)
       erubis (~> 2.7.0)
       rails-dom-testing (~> 1.0, >= 1.0.5)
-      rails-html-sanitizer (~> 1.0, >= 1.0.1)
-    activejob (4.2.1)
-      activesupport (= 4.2.1)
+      rails-html-sanitizer (~> 1.0, >= 1.0.2)
+    activejob (4.2.6)
+      activesupport (= 4.2.6)
       globalid (>= 0.3.0)
-    activemodel (4.2.1)
-      activesupport (= 4.2.1)
+    activemodel (4.2.6)
+      activesupport (= 4.2.6)
       builder (~> 3.1)
-    activerecord (4.2.1)
-      activemodel (= 4.2.1)
-      activesupport (= 4.2.1)
+    activerecord (4.2.6)
+      activemodel (= 4.2.6)
+      activesupport (= 4.2.6)
       arel (~> 6.0)
-    activesupport (4.2.1)
+    activesupport (4.2.6)
       i18n (~> 0.7)
       json (~> 1.7, >= 1.7.7)
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.3.8)
-    arel (6.0.0)
+    addressable (2.4.0)
+    arel (6.0.3)
     awesome_print (1.6.1)
     builder (3.2.2)
-    capybara (2.6.2)
+    capybara (2.7.1)
       addressable
       mime-types (>= 1.16)
       nokogiri (>= 1.3.3)
@@ -50,122 +50,95 @@ GEM
     capybara-webkit (1.11.1)
       capybara (>= 2.3.0, < 2.8.0)
       json
-    coderay (1.1.0)
-    coffee-rails (4.1.0)
+    coderay (1.1.1)
+    coffee-rails (4.1.1)
       coffee-script (>= 2.2.0)
-      railties (>= 4.0.0, < 5.0)
+      railties (>= 4.0.0, < 5.1.x)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
-    coffee-script-source (1.9.1.1)
+    coffee-script-source (1.10.0)
+    concurrent-ruby (1.0.2)
     coveralls (0.8.13)
       json (~> 1.8)
       simplecov (~> 0.11.0)
       term-ansicolor (~> 1.3)
       thor (~> 0.19.1)
       tins (~> 1.6.0)
-    database_cleaner (1.5.1)
+    database_cleaner (1.5.3)
     diff-lcs (1.2.5)
     docile (1.1.5)
-    elasticsearch (1.0.8)
-      elasticsearch-api (= 1.0.7)
-      elasticsearch-transport (= 1.0.7)
-    elasticsearch-api (1.0.7)
+    elasticsearch (1.0.17)
+      elasticsearch-api (= 1.0.17)
+      elasticsearch-transport (= 1.0.17)
+    elasticsearch-api (1.0.17)
       multi_json
-    elasticsearch-dsl (0.1.0)
-    elasticsearch-model (0.1.7)
+    elasticsearch-dsl (0.1.3)
+    elasticsearch-model (0.1.8)
       activesupport (> 3)
       elasticsearch (> 0.4)
       hashie
-    elasticsearch-transport (1.0.7)
+    elasticsearch-transport (1.0.17)
       faraday
       multi_json
     erubis (2.7.0)
-    execjs (2.5.2)
-    factory_girl (4.5.0)
+    execjs (2.6.0)
+    factory_girl (4.7.0)
       activesupport (>= 3.0.0)
-    factory_girl_rails (4.6.0)
-      factory_girl (~> 4.5.0)
+    factory_girl_rails (4.7.0)
+      factory_girl (~> 4.7.0)
       railties (>= 3.0.0)
     faker (1.6.3)
       i18n (~> 0.5)
-    faraday (0.9.1)
+    faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.10)
-    ffi (1.9.10-x64-mingw32)
-    formatador (0.2.5)
-    foundation-rails (5.5.1.2)
+    foundation-rails (5.5.3.2)
       railties (>= 3.1.0)
       sass (>= 3.3.0, < 3.5)
-    globalid (0.3.5)
+    globalid (0.3.6)
       activesupport (>= 4.1.0)
-    guard (2.13.0)
-      formatador (>= 0.2.4)
-      listen (>= 2.7, <= 4.0)
-      lumberjack (~> 1.0)
-      nenv (~> 0.1)
-      notiffany (~> 0.0)
-      pry (>= 0.9.12)
-      shellany (~> 0.0)
-      thor (>= 0.18.1)
-    guard-compat (1.2.1)
-    guard-rspec (4.6.4)
-      guard (~> 2.1)
-      guard-compat (~> 1.1)
-      rspec (>= 2.99.0, < 4.0)
-    hashie (3.4.1)
+    hashie (3.4.4)
     i18n (0.7.0)
-    jquery-rails (4.0.3)
-      rails-dom-testing (~> 1.0)
+    jquery-rails (4.1.1)
+      rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     json (1.8.3)
     kaminari (0.16.3)
       actionpack (>= 3.0.0)
       activesupport (>= 3.0.0)
-    kaminari-i18n (0.3.2)
+    kaminari-i18n (0.4.0)
       kaminari
       rails
     launchy (2.4.3)
       addressable (~> 2.3)
-    listen (3.0.6)
-      rb-fsevent (>= 0.9.3)
-      rb-inotify (>= 0.9.7)
     loofah (2.0.3)
       nokogiri (>= 1.5.9)
-    lumberjack (1.0.10)
-    mail (2.6.3)
-      mime-types (>= 1.16, < 3)
+    mail (2.6.4)
+      mime-types (>= 1.16, < 4)
     method_source (0.8.2)
-    mime-types (2.99.1)
+    mime-types (3.0)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2016.0221)
     mini_portile2 (2.0.0)
     minitest (5.8.4)
-    multi_json (1.11.0)
+    multi_json (1.12.0)
     multipart-post (2.0.0)
-    nenv (0.3.0)
     nokogiri (1.6.7.2)
       mini_portile2 (~> 2.0.0.rc2)
     nokogiri (1.6.7.2-x64-mingw32)
       mini_portile2 (~> 2.0.0.rc2)
-    notiffany (0.0.8)
-      nenv (~> 0.1)
-      shellany (~> 0.0)
-    omniauth (1.2.2)
+    omniauth (1.3.1)
       hashie (>= 1.2, < 4)
-      rack (~> 1.0)
+      rack (>= 1.0, < 3)
     omniauth-browserid (0.0.1)
       faraday
       multi_json
       omniauth (~> 1.0)
-    pry (0.10.1)
+    pry (0.10.3)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    pry (0.10.1-x64-mingw32)
-      coderay (~> 1.1.0)
-      method_source (~> 0.8.1)
-      slop (~> 3.4)
-      win32console (~> 1.3)
     pry-rails (0.3.4)
       pry (>= 0.9.10)
     quiet_assets (1.1.0)
@@ -173,16 +146,16 @@ GEM
     rack (1.6.4)
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.1)
-      actionmailer (= 4.2.1)
-      actionpack (= 4.2.1)
-      actionview (= 4.2.1)
-      activejob (= 4.2.1)
-      activemodel (= 4.2.1)
-      activerecord (= 4.2.1)
-      activesupport (= 4.2.1)
+    rails (4.2.6)
+      actionmailer (= 4.2.6)
+      actionpack (= 4.2.6)
+      actionview (= 4.2.6)
+      activejob (= 4.2.6)
+      activemodel (= 4.2.6)
+      activerecord (= 4.2.6)
+      activesupport (= 4.2.6)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.1)
+      railties (= 4.2.6)
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
@@ -192,24 +165,17 @@ GEM
       rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
-    rails-i18n (4.0.4)
-      i18n (~> 0.6)
+    rails-i18n (4.0.8)
+      i18n (~> 0.7)
       railties (~> 4.0)
-    railties (4.2.1)
-      actionpack (= 4.2.1)
-      activesupport (= 4.2.1)
+    railties (4.2.6)
+      actionpack (= 4.2.6)
+      activesupport (= 4.2.6)
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
     rake (11.1.2)
-    rb-fsevent (0.9.7)
-    rb-inotify (0.9.7)
-      ffi (>= 0.5.0)
-    rdoc (4.2.0)
+    rdoc (4.2.2)
       json (~> 1.4)
-    rspec (3.4.0)
-      rspec-core (~> 3.4.0)
-      rspec-expectations (~> 3.4.0)
-      rspec-mocks (~> 3.4.0)
     rspec-core (3.4.4)
       rspec-support (~> 3.4.0)
     rspec-expectations (3.4.0)
@@ -227,25 +193,24 @@ GEM
       rspec-mocks (~> 3.4.0)
       rspec-support (~> 3.4.0)
     rspec-support (3.4.1)
-    sass (3.4.13)
-    sass-rails (5.0.3)
+    sass (3.4.22)
+    sass-rails (5.0.4)
       railties (>= 4.0.0, < 5.0)
       sass (~> 3.1)
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
-      tilt (~> 1.1)
+      tilt (>= 1.1, < 3)
     sdoc (0.4.1)
       json (~> 1.7, >= 1.7.7)
       rdoc (~> 4.0)
-    shellany (0.0.1)
     shoulda-matchers (3.1.1)
       activesupport (>= 4.0.0)
-    simplecov (0.11.1)
+    simplecov (0.11.2)
       docile (~> 1.1.0)
       json (~> 1.8)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
-    slim (3.0.3)
+    slim (3.0.6)
       temple (~> 0.7.3)
       tilt (>= 1.3.3, < 2.1)
     slim-rails (3.0.1)
@@ -255,39 +220,38 @@ GEM
       railties (>= 3.1, < 5.0)
       slim (~> 3.0)
     slop (3.6.0)
-    spring (1.6.4)
+    spring (1.7.1)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
-    sprockets (3.0.2)
-      rack (~> 1.0)
-    sprockets-rails (2.2.4)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      sprockets (>= 2.8, < 4.0)
-    sqlite3 (1.3.10)
-    sqlite3 (1.3.10-x64-mingw32)
-    temple (0.7.5)
+    sprockets (3.6.0)
+      concurrent-ruby (~> 1.0)
+      rack (> 1, < 3)
+    sprockets-rails (3.0.4)
+      actionpack (>= 4.0)
+      activesupport (>= 4.0)
+      sprockets (>= 3.0.0)
+    sqlite3 (1.3.11)
+    sqlite3 (1.3.11-x64-mingw32)
+    temple (0.7.6)
     term-ansicolor (1.3.2)
       tins (~> 1.0)
-    test_after_commit (0.4.2)
+    test_after_commit (1.0.0)
       activerecord (>= 3.2)
     thor (0.19.1)
     thread_safe (0.3.5)
-    tilt (1.4.1)
+    tilt (2.0.2)
     tins (1.6.0)
     turbolinks (2.5.3)
       coffee-rails
     tzinfo (1.2.2)
       thread_safe (~> 0.1)
-    tzinfo-data (1.2015.7)
+    tzinfo-data (1.2016.4)
       tzinfo (>= 1.0.0)
-    uglifier (2.7.1)
-      execjs (>= 0.3.0)
-      json (>= 1.8.0)
+    uglifier (3.0.0)
+      execjs (>= 0.3.0, < 3)
     validate_url (1.0.2)
       activemodel (>= 3.0.0)
       addressable
-    win32console (1.3.2)
     xpath (2.0.0)
       nokogiri (~> 1.3)
 
@@ -308,7 +272,6 @@ DEPENDENCIES
   factory_girl_rails
   faker
   foundation-rails (~> 5.5)
-  guard-rspec
   jquery-rails
   kaminari
   kaminari-i18n