Add Conversational Development Index page to admin panel

app/assets/images/i2p-step.svg

app/assets/javascripts/dispatcher.js

app/assets/javascripts/user_callout.js

app/assets/stylesheets/framework/variables.scss

app/assets/stylesheets/pages/convdev_index.scss

app/assets/stylesheets/pages/profile.scss

...lers/admin/conversational_development_index_controller.rb

app/helpers/application_helper.rb

app/helpers/conversational_development_index_helper.rb

app/models/conversational_development_index/card.rb

...nversational_development_index/idea_to_production_step.rb

app/models/conversational_development_index/metric.rb

...ters/conversational_development_index/metric_presenter.rb

app/services/submit_usage_ping_service.rb

app/views/admin/background_jobs/show.html.haml

...admin/conversational_development_index/_callout.html.haml

...ws/admin/conversational_development_index/_card.html.haml

...dmin/conversational_development_index/_disabled.html.haml

...admin/conversational_development_index/_no_data.html.haml

...ews/admin/conversational_development_index/show.html.haml