Remove spaces from username prior to login credential matching

[JJSagan]

Hi @julien, @PitaJ ,

Assume you have a forum user with a username of: "[email protected]"
The user may login to the forum using his password.

However, if the user typed "[email protected] " (note the space following the email), the credentials wont' match.
The added space can be a result of copy/paste, or just an error from the user side.

I verified this behavior with this forum as well. It can be easily replicated by yourself.

I think this can help, and it may be a small change. Not sure however

All the best,
JJ.