[frontend] Custom Emoji Deletion (#994)

* 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

web/source/settings/components/form-fields.jsx

@@ -119,7 +119,7 @@ module.exports = {
 				field = (
 					<>
 						<label htmlFor={id} className="file-input button">Browse</label>
-						<span>
+						<span className="form-info">
 							{file ? file.name : "no file selected"} {size}
 						</span>
 						{/* <a onClick={removeFile("header")}>remove</a> */}