#20 Make username more mobile friendly on login form

[npeelman]

a rather trivial change:

autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"

added to the <input> field for username on site/login/loginForm.php will make signing in from a mobile device a little easier. I find myself often logging in from my phone or tablet while in the server room to check up on something, and everytime iOS tries to capitalize my username it bugs me ever so slightly. Finally happened enough yesterday that I set aside time to file a request this morning :)

Thanks for the excellent work you're doing!

[Miha Petkovsek]

Will fix for next release.