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- added a Node-based rendering server
- refactored build process (added dedicated script files for development and production build)
- refactored routing, so that it can be reused both on the client and on the server side
- added Page-type components for every app; currently they are the only components that run on the server and add the dynamic meta tags to the page
- updated redux code so that it doesn't try to access browser-specific apis during the startup
Co-authored-by: Kamal Dodiya <kamal@ebi.ac.uk>

- major version bump for rxjs (v6 -> v7)
- removed some of explicit babel transforms (some aren't necessary for our target browsers,
   whereas others are already included in @babel/preset-env)
- replaced the deprecated `node-sass` library with the `sass` library

Major updates:
- React from v 16 to v 17
- react-spring from v 8 to v 9
- husky to 6.0.0
- faker (one major version bump)
- eslint-config-prettier

Temporarily added dependency on dotenv-webpack (latest version) to prevent Storybook from crashing.

This finally allows us to remove the dependency on Enzyme.

Also as part of this PR:

- Removed components
  - LaunchbarContainer (serves no purpose)
  - Account (not used)
  - SpeciesTab (superseded by SelectedSpecies component; not used anywhere)
- Removed tests for Launchbar
- Removed the launchbarExpanded and accountExpanded fields from redux and from components
- Changed the keyCode field on KeyboardEvent to event.key
   (typescript marks it as deprecated, whereas Browser support seems to be good these days).

Migrate tests for components used on the GenomeBrowser page to react-testing-library.

Notable:
- Typescript v3 -> v4
- Storybook v5 -> v6
  - changed stories from `storiesOf` format to component story format
- Postcss-loader v3 -> v4
- D3 v5 -> v6

Changes that required manual intervention:

- webpack-merge no longer has default export
- replaced apollo-boost and @apollo/react-hooks with apollo-client v.3
- ran npx browserslist@latest --update-db to update caniuse-lite

- also, update config of copy-webpack-plugin, which has changed its api in version 6 slightly

Notable changes:

- typescript got updated to 3.9
- jest got a major update to v.26
- eslint got a major update to v.7

Notice that after updating jest to v.26 test suite is running 25-50% slower.

Co-authored-by: Andrey Azov <andrey@ebi.ac.uk>

Also, remove the 'git add' command from the lint-staged config in package.json

This commit introduces d3 into our codebase

- Update file-loader to version 5.0.2
- Remove @types/storybook__react (@storybook/react has its own type definitions now)
- Update other dependencies

Rather than starting with an environment-specific config as an entry point for webpack,
use a generic config as an entry point, and from there add more specific configs
via composition using webpack-merge.

And remove dependency on the `use-resize-observer` library

An earlier commit changed the means by which callbacks are registered to the scheduler. This was anticipated to have negligible effect, but was otherwise poorly motivated. As a result, the change had already been reverted on the active dev branch when it was later found that the change had a significant (well-characterised but poorly-understood) performance impact. Unfortunately, between the change and its reversion, the code got pushed to dev and live. The active dev branch for this code is not yet ready for merge, and the effect of this change being live  is noticeable. So this bugfix commit pushes the reversion (only) to dev.

Proper cross-fade animations.

Fix slow slowing-down of genome browser over time due to leak.

* Basic bumped scaling for margin-free regions.

* Correct for potentially lop-sided borders.

* Tweak padding pixels for small screens.

Ideally we need to find out why any padding pixels at all are needed.
But this works down to 1100px at least for now. I'll JIRA the rest.

* Update packages.

* ENSWBSITES-89 fix.

* New WASM.