changes a few little things so that bootstrap 'form-control' behaves corrrectly

I was forced to send out a BridgeTroll email to volunteers the other night on my phone, and the form was being really annoying. I checked on my computer later and the form was definitely not being responsive. I'm not sure why, but the "label_tag" was causing some problems. Also, the form elements had explicit widths in the style. I removed those and rearranged the form elements a bit. Works great on my end now.