Missing enctype attribute in form 0_userform.html

[N. Petkov]

Attachments possibility is provided (commented by default), but if user uncomment attachment section, attaching files doesn't work.
This is because in form tag is missing proper enctype attribute.
This can correct cahnging line:

<form id="contactform2" class="z-form" action="{modurl modname=Formicula type=user func=send}" method="post">

to:

<form id="contactform2" class="z-form" action="{modurl modname=Formicula type=user func=send}" method="post" enctype="multipart/form-data">