diff --git a/Gemfile b/Gemfile
index bf822266c..8d8e608c1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,18 +22,18 @@ gem "json-schema", "2.5.2"
 
 # Authentication
 
-gem "devise", "3.5.4"
+gem "devise", "3.5.5"
 gem "devise_lastseenable", "0.0.6"
 gem "devise-token_authenticatable", "~> 0.4.0"
 
 # Captcha
 
-gem "simple_captcha2", "0.3.4", require: "simple_captcha"
+gem "simple_captcha2", "0.4.0", require: "simple_captcha"
 
 # Background processing
 
 gem "sidekiq", "4.0.1"
-gem "sinatra", "1.4.6"
+gem "sinatra", "1.4.7"
 
 # Scheduled processing
 
@@ -56,7 +56,7 @@ gem "rack-cors", "0.4.0", require: "rack/cors"
 gem "bootstrap-sass", "3.3.6"
 gem "compass-rails",  "2.0.5"
 gem "sass-rails",     "5.0.4"
-gem "autoprefixer-rails", "6.2.2"
+gem "autoprefixer-rails", "6.3.1"
 gem "bootstrap-switch-rails", "3.3.3"
 
 # Database
@@ -87,14 +87,14 @@ gem "entypo-rails", "3.0.0.pre.rc2"
 # JavaScript
 
 gem "backbone-on-rails", "1.2.0.0"
-gem "handlebars_assets", "0.22.0"
-gem "jquery-rails",      "4.0.5"
+gem "handlebars_assets", "0.23.0"
+gem "jquery-rails",      "4.1.0"
 gem "jquery-ui-rails",   "5.0.5"
 gem "js_image_paths",    "0.0.2"
-gem "js-routes",         "1.2.0"
+gem "js-routes",         "1.2.3"
 
 source "https://rails-assets.org" do
-  gem "rails-assets-jquery",                              "1.11.2" # Should be kept in sync with jquery-rails
+  gem "rails-assets-jquery",                              "1.12.0" # Should be kept in sync with jquery-rails
 
   gem "rails-assets-markdown-it",                         "5.1.0"
   gem "rails-assets-markdown-it-hashtag",                 "0.4.0"
@@ -103,7 +103,7 @@ source "https://rails-assets.org" do
   gem "rails-assets-markdown-it--markdown-it-for-inline", "0.1.1"
   gem "rails-assets-markdown-it-sub",                     "1.0.0"
   gem "rails-assets-markdown-it-sup",                     "1.0.0"
-  gem "rails-assets-highlightjs",                         "9.0.0"
+  gem "rails-assets-highlightjs",                         "9.1.0"
   gem "rails-assets-typeahead.js",                        "0.11.1"
 
   # jQuery plugins
@@ -111,7 +111,7 @@ source "https://rails-assets.org" do
   gem "rails-assets-jeresig--jquery.hotkeys",       "0.2.0"
   gem "rails-assets-jquery-placeholder",            "2.3.1"
   gem "rails-assets-jquery-textchange",             "0.2.3"
-  gem "rails-assets-perfect-scrollbar",             "0.6.8"
+  gem "rails-assets-perfect-scrollbar",             "0.6.10"
   gem "rails-assets-jakobmattsson--jquery-elastic", "1.6.11"
   gem "rails-assets-autosize",                      "3.0.14"
   gem "rails-assets-blueimp-gallery",               "2.16.0"
@@ -177,7 +177,7 @@ gem "typhoeus",           "0.8.0"
 gem "gon",                     "6.0.1"
 gem "haml",                    "4.0.7"
 gem "mobile-fu",               "1.3.1"
-gem "will_paginate",           "3.0.7"
+gem "will_paginate",           "3.1.0"
 gem "rails-timeago",           "2.11.0"
 
 # Logging
diff --git a/Gemfile.lock b/Gemfile.lock
index fd1b7d6b4..58f212f94 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,7 +58,7 @@ GEM
     astrolabe (1.3.1)
       parser (~> 2.2)
     attr_required (1.0.0)
-    autoprefixer-rails (6.2.2)
+    autoprefixer-rails (6.3.1)
       execjs
       json
     backbone-on-rails (1.2.0.0)
@@ -140,7 +140,7 @@ GEM
       nokogiri (~> 1.5)
       rails (>= 3, < 5)
     database_cleaner (1.5.1)
-    devise (3.5.4)
+    devise (3.5.5)
       bcrypt (~> 3.0)
       orm_adapter (~> 0.1)
       railties (>= 3.2.6, < 5)
@@ -374,11 +374,11 @@ GEM
       haml (~> 4.0)
       rubocop (>= 0.25.0)
       sysexits (~> 1.1)
-    handlebars_assets (0.22.0)
+    handlebars_assets (0.23.0)
       execjs (~> 2.0)
       multi_json (~> 1.0)
-      sprockets (>= 2.0.0, < 4.0)
-      tilt (~> 1.2)
+      sprockets (>= 2.0.0)
+      tilt (>= 1.2)
     hashdiff (0.2.3)
     hashie (3.4.3)
     hike (1.2.3)
@@ -414,13 +414,13 @@ GEM
       rake
     jasmine-core (2.4.1)
     jasmine-jquery-rails (2.0.3)
-    jquery-rails (4.0.5)
+    jquery-rails (4.1.0)
       rails-dom-testing (~> 1.0)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (5.0.5)
       railties (>= 3.2.16)
-    js-routes (1.2.0)
+    js-routes (1.2.3)
       railties (>= 3.2)
       sprockets-rails
     js_image_paths (0.0.2)
@@ -612,7 +612,7 @@ GEM
       rails-assets-jquery.slimscroll (~> 1.3.6)
       rails-assets-jquery.ui (~> 1.11.4)
     rails-assets-favico.js (0.3.10)
-    rails-assets-highlightjs (9.0.0)
+    rails-assets-highlightjs (9.1.0)
     rails-assets-jakobmattsson--jquery-elastic (1.6.11)
       rails-assets-jquery (>= 1.2.6)
     rails-assets-jasmine (2.4.1)
@@ -620,7 +620,7 @@ GEM
       rails-assets-jasmine (~> 2)
     rails-assets-jeresig--jquery.hotkeys (0.2.0)
       rails-assets-jquery (>= 1.4.2)
-    rails-assets-jquery (1.11.2)
+    rails-assets-jquery (1.12.0)
     rails-assets-jquery-colorbox (1.6.3)
       rails-assets-jquery (>= 1.3.2)
     rails-assets-jquery-fullscreen-plugin (0.5.0)
@@ -638,7 +638,7 @@ GEM
     rails-assets-markdown-it-sanitizer (0.4.1)
     rails-assets-markdown-it-sub (1.0.0)
     rails-assets-markdown-it-sup (1.0.0)
-    rails-assets-perfect-scrollbar (0.6.8)
+    rails-assets-perfect-scrollbar (0.6.10)
     rails-assets-typeahead.js (0.11.1)
       rails-assets-jquery (>= 1.7)
     rails-deprecated_sanitizer (1.0.3)
@@ -763,7 +763,7 @@ GEM
       rufus-scheduler (>= 2.0.24)
       sidekiq (>= 4.0.0)
     sigar (0.7.3)
-    simple_captcha2 (0.3.4)
+    simple_captcha2 (0.4.0)
       rails (>= 4.1)
     simple_oauth (0.3.1)
     simplecov (0.11.1)
@@ -771,8 +771,8 @@ GEM
       json (~> 1.8)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.0)
-    sinatra (1.4.6)
-      rack (~> 1.4)
+    sinatra (1.4.7)
+      rack (~> 1.5)
       rack-protection (~> 1.4)
       tilt (>= 1.3, < 3)
     sinon-rails (1.15.0)
@@ -853,7 +853,7 @@ GEM
       activesupport (>= 3)
       railties (>= 3)
       yard (~> 0.7)
-    warden (1.2.4)
+    warden (1.2.6)
       rack (>= 1.0)
     webfinger (1.0.1)
       activesupport
@@ -864,7 +864,7 @@ GEM
       crack (>= 0.3.2)
       hashdiff
     websocket (1.2.2)
-    will_paginate (3.0.7)
+    will_paginate (3.1.0)
     xml-simple (1.1.5)
     xpath (2.0.0)
       nokogiri (~> 1.3)
@@ -880,7 +880,7 @@ DEPENDENCIES
   acts_as_api (= 0.4.2)
   addressable (= 2.3.8)
   asset_sync (= 1.1.0)
-  autoprefixer-rails (= 6.2.2)
+  autoprefixer-rails (= 6.3.1)
   backbone-on-rails (= 1.2.0.0)
   bootstrap-sass (= 3.3.6)
   bootstrap-switch-rails (= 3.3.3)
@@ -891,7 +891,7 @@ DEPENDENCIES
   cucumber-api-steps (= 0.13)
   cucumber-rails (= 1.4.2)
   database_cleaner (= 1.5.1)
-  devise (= 3.5.4)
+  devise (= 3.5.5)
   devise-token_authenticatable (~> 0.4.0)
   devise_lastseenable (= 0.0.6)
   diaspora-vines (~> 0.2.0.develop)
@@ -914,14 +914,14 @@ DEPENDENCIES
   guard-rubocop (= 1.2.0)
   haml (= 4.0.7)
   haml_lint (= 0.15.2)
-  handlebars_assets (= 0.22.0)
+  handlebars_assets (= 0.23.0)
   http_accept_language (= 2.0.5)
   i18n-inflector-rails (= 1.0.7)
   jasmine (= 2.4.0)
   jasmine-jquery-rails (= 2.0.3)
-  jquery-rails (= 4.0.5)
+  jquery-rails (= 4.1.0)
   jquery-ui-rails (= 5.0.5)
-  js-routes (= 1.2.0)
+  js-routes (= 1.2.3)
   js_image_paths (= 0.0.2)
   jshintrb (= 0.3.0)
   json (= 1.8.3)
@@ -963,11 +963,11 @@ DEPENDENCIES
   rails-assets-autosize (= 3.0.14)!
   rails-assets-blueimp-gallery (= 2.16.0)!
   rails-assets-diaspora_jsxc (~> 0.1.5.develop)!
-  rails-assets-highlightjs (= 9.0.0)!
+  rails-assets-highlightjs (= 9.1.0)!
   rails-assets-jakobmattsson--jquery-elastic (= 1.6.11)!
   rails-assets-jasmine-ajax (= 3.2.0)!
   rails-assets-jeresig--jquery.hotkeys (= 0.2.0)!
-  rails-assets-jquery (= 1.11.2)!
+  rails-assets-jquery (= 1.12.0)!
   rails-assets-jquery-placeholder (= 2.3.1)!
   rails-assets-jquery-textchange (= 0.2.3)!
   rails-assets-markdown-it (= 5.1.0)!
@@ -977,7 +977,7 @@ DEPENDENCIES
   rails-assets-markdown-it-sanitizer (= 0.4.1)!
   rails-assets-markdown-it-sub (= 1.0.0)!
   rails-assets-markdown-it-sup (= 1.0.0)!
-  rails-assets-perfect-scrollbar (= 0.6.8)!
+  rails-assets-perfect-scrollbar (= 0.6.10)!
   rails-assets-typeahead.js (= 0.11.1)!
   rails-i18n (= 4.0.8)
   rails-timeago (= 2.11.0)
@@ -998,9 +998,9 @@ DEPENDENCIES
   shoulda-matchers (= 3.0.1)
   sidekiq (= 4.0.1)
   sidekiq-cron (= 0.4.1)
-  simple_captcha2 (= 0.3.4)
+  simple_captcha2 (= 0.4.0)
   simplecov (= 0.11.1)
-  sinatra (= 1.4.6)
+  sinatra (= 1.4.7)
   sinon-rails (= 1.15.0)
   spring (= 1.6.1)
   spring-commands-cucumber (= 1.0.1)
@@ -1015,7 +1015,7 @@ DEPENDENCIES
   uuid (= 2.3.8)
   versionist (= 1.4.1)
   webmock (= 1.22.3)
-  will_paginate (= 3.0.7)
+  will_paginate (= 3.1.0)
 
 BUNDLED WITH
    1.11.2