Automated response: Member multi does not offer suggestions after the first input

This hotfix fixes an issue where username suggestions did not appear on username multi fields after the first field.

The reason it wasn't working was because event listeners do not get copied over by ensureNextField. This fix changes the "listeners" to explicit function assignments on the input fields so they get copied by ensureNextField.

This hotfix also improves the Private Topic username warnings a bit.

A hotfix (a TAR of files to upload) has been uploaded to this issue. Only apply this hotfix if you absolutely need it and cannot wait until the next release of Composr (releases are more reliable and strictly tested). As of Composr version 11, the recommended way to apply a hotfix is by following the same steps as an upgrade (https://baseurl/upgrader.php, use the hotfix on the step “Transfer across new/updated files”). The upgrader will automatically skip files belonging to addons you do not have installed or that are newer on disk than in the hotfix. Otherwise, you can manually extract and replace these files (do not replace if your on-disk file is newer than the one in the hotfix). Always take backups of your site or at least files you are replacing before applying a hotfix. Not sure how to extract TAR files to your Windows computer? Try 7-zip (http://www.7-zip.org/).