Use property for emoji sequence

✨ Emoji display and order

Appends Variation Selector 16 to index.html, ensuring any codepoint with
a text and an emoji type always display emoji

Allows display order on index

Django 3.1, and docs updates

Cloud Build improvements

Note one-step secret creation

Merge sm_helper directly into superuser management command

Post create, docs improvements

Utility Upgrade

Bump django from 3.0.4 to 3.0.7

Bumps [django](https://github.com/django/django) from 3.0.4 to 3.0.7.
- [Release notes](https://github.com/django/django/releases)
- [Commits](https://github.com/django/django/compare/3.0.4...3.0.7

)

Signed-off-by: dependabot[bot] <support@github.com>

Squash Commit - Cloud Run button

Make base django settings a .env file stored in SecretManager

To reduce the complexity of having to setup 5 secrets, this commit
changes the base django settings to be a file stored in secret manager,
pulled in the event that there is no local .env file (removing the
template .env file).

Shell changes made to suit.
Terraform changes made to suit, using a templatefile.

Also combines moving settings.py to unicodex/settings.py, and associated
file changes

Terraform cleanliness

plus removing stale comments
plus converting declaratives to not use quotemarks
plus removing whitespace