Part 3 of the migration.

Part 2 here: https://github.com/actualbudget/actual/pull/1419

Co-authored-by: biohzrddd <10577752+biohzrddd@users.noreply.github.com>

This cleans up all of the usage of `<a>` in the codebase. Now all
external links get the appropriate attributes added.

Co-authored-by: Jed Fox <git@jedfox.com>

It now always shows a menu, so the user doesn’t unexpectedly perform an
action.

Depends on https://github.com/actualbudget/docs/pull/202.

Introduces a **ResponsiveProvider** as the sole location that tracks
window size and makes that info available to the entire app. This can be
used for media queries and size-based component switching.
---------

Co-authored-by: Jed Fox <git@jedfox.com>

Fixes #852.

Closes #842

---------

Co-authored-by: Jed Fox <git@jedfox.com>

Seems to build fine, will test later.

I noticed that the first run flow is suboptimal for people who want to
import an existing file from Actual/YNAB. I’ve moved the welcome modal
into the management app and set it up to appear when there are no
budgets available (which also has the benefit of allowing people to see
the modal again!)

I think there’s some weirdness around getting the modal to reappear when
deleting a budget file which I want to work out before merging this.

This PR also reorganizes the management app a bit to reduce usage of
modals (currently, hitting escape while the budget list is open leaves
you with a blank page).

<img width="539" alt="Screenshot_2023-03-18 08 53 54"
src="https://user-images.githubusercontent.com/25517624/226107462-b2b88791-1015-4397-b290-c64e7fcc0f41.png">

- [x] Ensure modal consistently appears when needed (no longer a modal!)
- [x] Fix e2e tests

* Allow the server to auto-configure the server URL for the client

* Extract server URL/version logic out to ensure consistent updates

* ()

* Be more explicit about when the server version is re-fetched

* Use a single layer of context provider

* Move the bootstrap route to /account/needs-bootstrap

* No more `isActual`

* Refactor to call subscribe-needs-bootstrap instead of fetch()

* Dedupe calls to subscribe-needs-bootstrap

* Don’t revalidate the server when we just validated it

* simplify

* Fix setServerURL

*  (prettier) adding trailing commas

* More commas

The Actualbudget blog no longer exists, replaced the links with the OSS release notes.

*   upgrade eslint-plugin-import and fix issues

* Change import ordering

* Split the Settings component into multiple files (#434)
* Remove need for isMobile in CSS: lean on media queries in styles.js and glamor

Co-authored-by: Matiss Janis Aboltins <matiss@mja.lv>
Co-authored-by: Jed Fox <git@jedfox.com>

* style: enforce sorting of imports

* style: alphabetize imports

* style: merge duplicated imports

* style: enforce ordering of imports

* style: sort imports in loot-core

* style: sort imports in desktop-client

* style: sort imports in loot-design

* style: manual fixes

Release note publishing is currently in flux. As such, there is no
determinate location to link to.