* re-add eslint
* fix oauth url getting too long
* actually attach single emoji get and delete routes
* basic emoji details + deletion using rtk query
* refactor emoji upload to rtk query
* clean up old redux api+reducers for custom emoji
* fix validation order
* refactor custom emoji form fields
* remove unused requires
* cleanup, fix most eslint errors
* more small eslint fixes
* fix max emoji size
* tiny bit of function documentation
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