* bump E2E package versions to latest
* first pass on E2E test package.json
* move e2e specs to admin-e2e-tests
* add global types, reimplement tests/e2e/specs
* use consistent build dir with other packages
* add documentation, improve test:e2e script
* fix linting issues in admin-e2e-tests
* fix more linting issues
* disable lint on requires
* use e2e in the E2E container names
* move analytics overview test to package
* change extension on analytics-overview test file
* fix linting issues in e2e analytics overview
* remove package scripts from e2e package
* change test specs extensions to .tsx
* remove import from analytics overview test spec
* add .tsx to e2e test spec file extension list
* update e2e business features count expected
* First pass at adding feature flags. Accessible over PHP and JS.
* Hook up dev config to test enviornments, hook up features to their flags.
* Cleanup some code and add documentation. Remove beta config.
* Handle PR Feedback: Add devdocs flag, remove categories flag, fix auto-generated PHP warning.
* Add todo for beta phase.
* Handle PR feedback: Simplify is_array check, update build command, simplify test mock, remove empty webpack line.
Ron Rennick
Justin Shreve
Kelly Dwan