make all possible dependencies optional

tests passing

add min env file

add additional_url_patterns

add oauth2_provider

remove warning about user keys

Fix pygments lexer warnings in docs build

Add install dependency tip box to plot gizmos.

black formatting

fix lint

Removed lingering references to the old developer tools page

Add "Starting with Tethys 5.0..."

Update tutorial to require installing plotly

optional dep notes for Tethys Portal configuration
Fixes typo in GRAVATAR_DEFAULT_SECURE setting

Replace deprecated Axes setting in docs.
Note: settings.py is updated in master

docs for social_auth, mf2, and simple_captcha

Reviewed manual production configuration docs for optional args

REST API  and Terms and conditions optional deps

JSON Custom setting optional dependency docs

MapLayout and pyshp optional dependency.

document template tags

most optional dependencies documented

add micro metayaml
update ci

…le Gizmo statuses, and allow sorting of the JobsTable.

Address reviewer comments

update tutorial docs for optional dependencies
remove references to UrlMaps in gizmo docs