Include Webpack and use it for jQuery, Bootstrap and chosen.js

Gemfile.lock

@@ -73,8 +73,6 @@ GEM
       msgpack (~> 1.0)
     bootstrap-will_paginate (1.0.0)
       will_paginate
-    bootstrap_pagedown (1.1.0)
-      rails (>= 3.2)
     builder (3.2.3)
     bunny (2.12.0)
       amq-protocol (~> 2.3, >= 2.3.0)
@@ -118,7 +116,7 @@ GEM
     coderay (1.1.2)
     concurrent-ruby (1.0.5)
     crass (1.0.4)
-    d3-rails (5.5.0)
+    d3-rails (5.7.0)
       railties (>= 3.1)
     database_cleaner (1.7.0)
     debug_inspector (0.0.3)
@@ -210,6 +208,8 @@ GEM
       multi_json (~> 1.3)
       multi_xml (~> 0.5)
       rack (>= 1.2, < 3)
+    pagedown-bootstrap-rails (2.1.4)
+      railties (> 3.1)
     parallel (1.12.1)
     parser (2.5.1.2)
       ast (~> 2.4.0)
@@ -228,6 +228,8 @@ GEM
     rack (2.0.5)
     rack-mini-profiler (1.0.0)
       rack (>= 1.2.0)
+    rack-proxy (0.6.5)
+      rack
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.1)
@@ -377,6 +379,10 @@ GEM
       activemodel (>= 5.0)
       bindex (>= 0.4.0)
       railties (>= 5.0)
+    webpacker (3.5.5)
+      activesupport (>= 4.2)
+      rack-proxy (>= 0.6.1)
+      railties (>= 4.2)
     websocket (1.2.8)
     websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
@@ -397,7 +403,6 @@ DEPENDENCIES
   binding_of_caller
   bootsnap
   bootstrap-will_paginate
-  bootstrap_pagedown
   capistrano
   capistrano-rails
   capistrano-rvm
@@ -424,6 +429,7 @@ DEPENDENCIES
   newrelic_rpm
   nokogiri
   nyan-cat-formatter
+  pagedown-bootstrap-rails
   pg
   pry-byebug
   puma
@@ -450,6 +456,7 @@ DEPENDENCIES
   turbolinks
   uglifier
   web-console
+  webpacker
   whenever
 
 BUNDLED WITH