Spike on data dashboard; pull in full Bootstrap CSS and JS

[bensheldon]

Connects to #50

[bensheldon]

• Add engine directory to Gemspec
• Extract ordering to a scope like display_all, so that later can have display_upcoming, display_errored, display_finished.

[morgoth]

@bensheldon I wanted to try the engine but it doesn't load for me.
I'm using the gem from master branch, but I cannot require "good_job/engine".

I can also see that it is not in load path as stated in https://github.com/bensheldon/good_job/blob/main/good_job.gemspec#L2

> pp $LOAD_PATH.grep /good_job/
=> ["/home/wojtek/.asdf/installs/ruby/2.6.6/lib/ruby/gems/2.6.0/bundler/gems/good_job-c84288185da6/lib"]

Do I need to do some extra setup to make it work?

[bensheldon]

@morgoth thank you for taking the time to try to get it working. I am investigating.

[bensheldon]

@morgoth I have a PR (#134) that I think fixes the problem. Could you try it out locally and give me feedback? Here's some preliminary documentation:

1. Explicitly require the Engine code at the top of your config/application.rb file, immediately after Rails is required. This is necessary because the mountable engine is an optional feature of GoodJob.

   # config/application.rb
   require_relative 'boot'
   
   require 'rails/all'
   require 'good_job/engine' # <= Add this line
   # ...

2. Mount the engine in your config/routes.rb file. The following will mount it at the example.com/good_job` URL.

   # config/routes.rb
   # ...
   mount GoodJob::Engine => 'good_job'

   Because jobs can potentially contain sensitive information, you should have authorization. For example, using Devise's authenticate helper, that might look like:

   # config/routes.rb
   # ...
   authenticate :user, ->(user) { user.admin? } do
     mount GoodJob::Engine => 'good_job'
   end

Thank you 🙏