[#53/72/74] Change hard-deletion of users to soft-deactivation, add decorators

[krissy]

Addresses #53, #72 and #74

What this does

We no longer want to hard-delete users, just deactivate them, also securing the images they uploaded from being wiped. Also adds decorators for presentation logic going forward (#72).

Features

• [x] Migration to add a deleted_at field to the user model
• [x] Override user.destroy method to update deleted_at field, sign user out and deactivate account, showing appropriate flash message
• [x] Update User Profile page to show Deactivated copy over Deleted
• [x] Add decorators via the draper gem (#72)
• [x] Set up dotenv for managing development/test ENV vars + update README for copying config
• [x] Adds ENV var for support email ready to call with Rails.application.config.support_email whenever we need to show a support CTA. Currently set to drawmylife@empowerhack.com

  Local test instructions

• Checkout the branch
• Run bundle install
• Run bundle exec rake db:migrate
• As per the README update, copy the development env file: cp .env.development.example .env
• Start the server: bundle exec rails s

  Deployment instructions

• Add SUPPORT_EMAIL config var to heroku env vars
• Run migration

  Screenshots

Deleted user:

Deactivate copy:

evi

[steverabino]

LGTM; you realise you're not actually using the support email anywhere, or is this for use later?

[krissy]

@stevesmith2609 Thank you! Yeah, I started building the support email code to use in Devise message for failed login. However, Devise currently makes it v complicated to use translations that have dynamic variables for their flash errors and was not worth the hack right now. :( The work had been done at least and I think the UI should definitely have a support link somewhere, so leaving it in.

[steverabino]

:+1: