Display balances in category autocomplete (#2551)

* Display balances in category autocomplete

* Release notes

* Fix typecheck error

* Update balance colors

* Show category balances in mobile

* Patch unit tests

* Darket midnight theme autocomplete hover color

* Category autocomplete split transaction highlight

* Update 2551.md

* Extract modals from EditField

* Fix failing tests

* Update variable names

---------

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