close #420

adjust ban duration edit  minimum, so dates (or invalid input) returned as 0 are not allowed
change error message for ban_duration

controllers/forms/editbans.js

@@ -22,7 +22,7 @@ module.exports = {
 		const errors = await checkSchema([
 			{ result: lengthBody(req.body.checkedbans, 1), expected: false, error: 'Must select at least one ban' },
 			{ result: inArrayBody(req.body.option, ['unban', 'edit', 'deny_appeal']), expected: true, error: 'Invalid ban action' },
-			{ result: req.body.option !== 'edit' || numberBody(req.body.ban_duration, 0), expected: true, error: 'Invalid filter auto ban duration' },
+			{ result: req.body.option !== 'edit' || numberBody(req.body.ban_duration, 1), expected: true, error: 'Invalid ban duration' },
 		]);
 
 		const redirect = req.params.board ? `/${req.params.board}/manage/bans.html` : '/globalmanage/bans.html';