I've updated the return values in `sync/index` to sensible values based
on how they're being called.

I've updated the type of `msg.value` to be `string | number | null` to
match the values expected by `serializeValue`

Also remove the need to unmount & remount when switching between
accounts. Fixes #1169

For #1152

- New linter rules are now added
- Perhaps the `createPayee` method i've tagged with a disable should be
deleted.
- I have ignored unused methods in Plaid/Mobile as this stuff is still
WIP/experimental?

* Provide `match` prop to class components that still rely on it.
* Fixes #1169
* Fixes an unrelated crash on Payees

Looks like this got missed in the last PR!

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

Last one before I add the actual linter rules!

None of this code is relevant to people who have used the open source
app. I initially wanted to leave it in so it could be used for major new
features in the future, but as it falls further and further out of date
I think it’s best to just delete it in a clean PR that can be referenced
later if desired.

Following on from #1146 this PR removes all unused exports from
`loot-core/`

Closes #1069

I've not actually tested this change. Which is why I'm not changing it
to direct links (as they might not work).

Instead I'm just applying a very quick patch so the message would not be
misleading anymore.

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

This PR is for the first item listed in #559: `Expand All / Collapse All
Categories`

For the expand / collapse all categories functionality, I was choosing
between having a single `Expand / collapse all categories` button or one
for each: `Expand all categories` and `Collapse all categories` buttons.

For the initial implementation, I have opted with the latter. Please let
me know which one is the right way to go or if there are other
suggestions and I'll just accordingly.


![image](https://github.com/actualbudget/actual/assets/20313680/64d0e498-1139-4dd0-9b7f-4d478ab947aa)

actual-server does not need to import the full actual-app/api package.
It can import only the CRDT stuff.. so I'm extracting it into a new
package to reduce the size of actual-server and make the link between
things more transparent.

Continuing on from #1139 this PR deletes all function that are not used
anywhere.

The next PR will include all the entire files that are unused & deleted.

This reverts #1029. As raised in #1097, the formatting chosen doesn’t
work well when doing math. There may be a way to balance compatibility
with multiple format styles with handling non-currency amounts
correctly, but it will require some more careful consideration. Re-opens
#894.

URLs with the trailing slash don’t work well — requests end up being
made to `https://example.com//sync/sync`

 and such which can 404

---------

Co-authored-by: Matiss Janis Aboltins <matiss@mja.lv>

As discussed in #1126 creating separate PRs.

The linter rule isn't actually part of this first PR and will likely be
in the final PR as otherwise it will just fail because all the issues
aren't resolved.

The code is 'ready' though so as soon as this is merged I will open next
one(s)

Closes #1125

Disables (hides) the "all payees" checkbox when schedules are loading.

Reproduction:
1. open `/schedule/discover`
2. while the data is still loading - click on the checkbox in the table
header
3. after loading finishes - the page crashes with an error

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

Replaced contributing link

<!-- Thank you for submitting a pull request! Make sure to follow the
instructions to write release notes for your PR — it should only take a
minute or two:
https://github.com/actualbudget/docs#writing-good-release-notes -->

Further Nordigen fixes for expired bank-links. With the recent changes
to the router, we had broken this functionality.

<img width="488" alt="Screenshot 2023-06-14 at 09 00 21"
src="https://github.com/actualbudget/actual/assets/886567/8e7516e0-121a-46e0-9e52-24748b161173">
<img width="437" alt="Screenshot 2023-06-14 at 09 00 30"
src="https://github.com/actualbudget/actual/assets/886567/88b36549-1073-4269-b42f-1553c164316f">

Fix linking via the account page. Previously it was not fully working if
the user had not set up the credentials before.



https://github.com/actualbudget/actual/assets/886567/588dc437-b53d-4616-8612-a2ef07445dc8



---------

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

Small bugfix for nordigen.

Do not perform the server status check if the user is actually offline.

Previously, the frontend would attempt to make real requests to
`https://not-configured/`, which of course failed. I’ve changed the
internal structure to have the lack of a server expressed as a `null`
server. A new `did-bootstrap` browser-level setting has been added to
track if the user clicked “Don’t use a server.”

Finally, I updated the auth logic for methods that call out to the
server to make them consistent and use the early return style which
reduces indentation.

This should fix the test failures on `master` — currently tests are
failing because the cache was created with an old version of Node.

This adds an option to the month drop down to check all the template
lines. If there are errors the offending line is shown with its
category.

I also modified the wording on the regular template return to be more
accurate. Fixes #1100

After #1115, new Node.js versions will be able to be used for
development of the frontend. This PR changes the recommended Node.js
version to 18 (the current LTS version). I have also tested with 16 and
20 and it works.

I also took the opportunity to:

- move the build script that was at the project root to the `bin/`
folder
- update the `browserslist` to target Electron 24 (which is the version
we currently build against). This results in a slightly smaller bundle
due to no longer having to transpile optional chaining.

~based on #1114~

This brings its build process up to date with the rest of the project.
We can now use Node 20 to build successfully.

Closes #918

Bundle sizes are unchanged but now we no longer pull in the
Electron-specific FS code on the web version

Draft because it is untested, maybe tonight I will test it! Just wanted
to get some code out cause i had a spare 5 minutes.

The new parser isn't immediately good enough to replace the old parser,
and I sadly lost the time to contribute more! Sorry! If someone else
wants to take maintenance burden of this code, we can not merge this.
Otherwise, it should go the way of the Dodo it seems.

Thanks!

Closes #1044