Squashed commit of the following: 6294-paste-email

commit e5d54a65
Author: Herman van Rink <rink@initfour.nl>
Date:   Sun Feb 27 23:25:32 2022 +0100

    Paste email address to select mail domain

interface/web/mail/templates/mail_user_mailbox_edit.htm

@@ -6,7 +6,7 @@
                 <label class="col-sm-3 control-label"><em>*</em> {tmpl_var name='email_txt'}</label>
                 <div class="col-sm-9">
 				    <div class='input-group'>
-						<input type="text" id="email_local_part" name="email_local_part" value="{tmpl_var name='email_local_part'}" class="form-control" />
+						<input type="text" id="email_local_part" name="email_local_part" value="{tmpl_var name='email_local_part'}" class="form-control" onChange="javascript: if (/@/.test(this.value)) { parts = this.value.split('@'); $('#email_domain').val(parts.pop()); $('#email_domain').trigger('change'); this.value=parts.pop(); } " />
 						<span class='input-group-addon'>@</span>
                         <div class='input-group-field'>
 							<select name="email_domain" id="email_domain" class="form-control" style="height:50px;min-width:170px;">{tmpl_var name='email_domain'}</select>