Panels.NewPage should use "create" action instead of "xpage=create".

In the panel "Panels.NewPage", after the user fills the form, the panel performs a page creation using "xpage=create" in the URL instead of the better action "xwiki/bin/create/Space/Page".

The fix is to replace:
<form method="post" action="$doc.getURL('view', 'xpage=create')" onsubmit="cancelCancelEdit()">
by:
<form method="post" action="$doc.getURL('create')" onsubmit="cancelCancelEdit()">