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

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)

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

Fixes #1021

Seems to build fine, will test later.

* Allow rendering a schedule rule in <Value />

* Refactor: RulesPage.getNthRule returns arrays for conditions/actions

* Visit the rules page after creating a schedule

* Add missing imported_payee case

* Switch over to a `switch` to ensure no other cases are missed

* Fix switching from “amount” to “amount (inflow/outflow)”

* fix crash when parsing null value as number

* Fix formatting for “payee/category/account contains” filters

*  (prettier) adding trailing commas

* More commas

* Make the filter text clickable

* Fix display of notes field in rules/filters

* Allow editing filters

* debugger

* Regenerate icons without the .web.js extension

* Move icons in the root folder to a “v0” folder

* Remove generated index.js files

* Update generator to auto-remove deleted icons

* Add back AnimatedLoading + Loading

* Add SVG files for missing icons

* lint fix

* the perils of (not) running a case-sensitive file system

* Fix new import

* Switch v0 icons from width/height to viewBox

It’s still also available as a modal when editing payees