* Simplify sorting and make it more readable
* Make sorter local
* Fix sorters dropdowns go back to default
* Fix luacheck
* Move sorting dropdown values to selected_idxs
* Show previous sorters when going back from message/contacts/...
* Use shallow copy instead of original table
* Open mail interface with previous tab/dropdowns
* Rework mail.sort_messages
* Combine filter and sort, make filtering safe
* Remove checks and logging from sorters
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Co-authored-by: Athozus <athozus@gmail.com>
