Release 1.18.0

[DeeDeeG]

Context

• Update some dependencies
• Update the Dockerfile config

Changes

• 616

• 617

• 618

Checklist

• [x] Tested Mobile Responsiveness
• [ ] Added Unit Tests
• [x] CI Passes
• [x] Deploys to Heroku on test Correctly (Maintainers will handle)
• [ ] Added Documentation (Service and Code when required)

[DeeDeeG]

PLEASE use the following text for the squashed commit message, thanks:

Squashed commit of the following:

commit a3ba4b7e1a12bc5f4836849d4e46fdb53187fcca
Author: DeeDeeG <DeeDeeG@users.noreply.github.com>
Date:   Fri Apr 3 22:10:09 2020 -0400

    Update Node.JS and Ruby Dependencies (#617)

    * Gemfile[.lock]: Update rails to 5.2.4.2

    Also update its dependencies, as required.

    * Gemfile[.lock]: Update grape and grape-swagger

    Also update their dependencies, as needed.

    * Gemfile[.lock]: Update activeadmin

    * Gemfile: Pin sprockets to "< 4"

    The 4.x major version upgrade requires some configuration changes.

    Pinning keeps the app from breaking when doing `bundle update`.

    * Gemfile.lock: Update all packages

    * yarn.lock: Update all packages

commit 15fe9f72c134e145deee2e4e8d1662f9997a0dec
Author: DeeDeeG <DeeDeeG@users.noreply.github.com>
Date:   Thu Apr 2 16:02:39 2020 -0400

    Ruby: Update from 2.5.7 to 2.5.8 (#618)

commit cc9f2a7c6128b88429e28bec633c07c4c5d8e733
Author: DeeDeeG <DeeDeeG@users.noreply.github.com>
Date:   Tue Mar 17 15:02:57 2020 -0400

    Update docker config (#616)

    * Dockerfile: Use better PhantomJS URL

    GitHub's CDN is more reliable than BitBucket's.

    (This is the URL we originally used as of PR #435,
    which was the initial implementation of our Docker setup.)

    * docker-compose.yml: Add password for PostgreSQL db

    This is in response to a recent change in the PostgreSQL Docker image.

    Either the database must be configured to not check passwords, i.e.
    `POSTGRESQL_HOST_AUTH_METHOD=trust`, or a password must now be set.

    For explanation and context, see:

    - https://github.com/docker-library/postgres/pull/658
    - https://github.com/docker-library/postgres/issues/681
    - https://github.com/docker-library/postgres/issues/580
    - https://discuss.circleci.com/t/postgresql-image-password-not-specified-issue/34555

On the other hand, I'm happy to squash and merge myself with that commit message, preferably after an "approved" review from somebody else.

[DeeDeeG]

Looks good on staging. I'm planning to merge in an hour or two.