pnp/views/kohana_error_page: plug another XSS hole

By issuing the request
GET pnp/$item?996fb"><script>alert(1)</script><"951e1=1
an alert is triggered in the meta refresh tag.

The hole is plugged by not setting the URL of the meta refresh.
The default behavior is to refresh the current page, which is what
we want anyway.

Change-Id: I6af0b15c929f95d651a576d46b99d2e1a88fe601

Signed-off-by: Mikael Falkvidd <mfalkvidd@op5.com>
Plug potential XSS hole in views/template.php

REQUEST_URI needs to be sanitized if used. Since we want to refresh
to the same page there is no need to set the URI.

Signed-off-by: Mikael Falkvidd <mfalkvidd@op5.com>