Add Delayed Job Web for superadmins only

This adds https://github.com/ejschmitt/delayed_job_web to enable async
job management such as retries, removal of failed jobs, etc.

Only superadmins can access this web UI though. Therefore any sysadmin
that needs to use it should have access to the appropriate instance
superadmin credentials in Bitwarden.

Gemfile

@@ -33,6 +33,7 @@ gem 'jwt', '~> 2.1'
 
 gem 'delayed_job_active_record'
 gem 'daemons'
+gem 'delayed_job_web'
 
 # Fix bug in simple_form preventing collection_check_boxes usage within form_for block
 # When merged, revert to upstream gem

Gemfile.lock

@@ -277,6 +277,11 @@ GEM
     delayed_job_active_record (4.1.3)
       activerecord (>= 3.0, < 5.3)
       delayed_job (>= 3.0, < 5)
+    delayed_job_web (1.4.3)
+      activerecord (> 3.0.0)
+      delayed_job (> 2.0.3)
+      rack-protection (>= 1.5.5)
+      sinatra (>= 1.4.4)
     devise (2.2.8)
       bcrypt-ruby (~> 3.0)
       orm_adapter (~> 0.1)
@@ -599,6 +604,8 @@ GEM
       rack (>= 0.4)
     rack-mini-profiler (0.10.7)
       rack (>= 1.2.0)
+    rack-protection (1.5.5)
+      rack
     rack-rewrite (1.5.1)
     rack-ssl (1.3.4)
       rack
@@ -710,6 +717,10 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
+    sinatra (1.4.6)
+      rack (~> 1.4)
+      rack-protection (~> 1.4)
+      tilt (>= 1.3, < 3)
     skylight (1.7.2)
       activesupport (>= 3.0.0)
     spinjs-rails (1.4)
@@ -802,6 +813,7 @@ DEPENDENCIES
   debugger-linecache
   deface!
   delayed_job_active_record
+  delayed_job_web
   diffy
   eventmachine (>= 1.2.3)
   factory_bot_rails

config/routes/admin.rb

@@ -1,5 +1,10 @@
 Openfoodnetwork::Application.routes.draw do
   namespace :admin do
+
+    authenticated :spree_user, -> user { user.has_spree_role?('admin') } do
+      mount DelayedJobWeb, at: '/delayed_job'
+    end
+
     resources :bulk_line_items
 
     resources :order_cycles do