Bug 1809494: Change Page submitted to portfolio submitted

When submitting a collection to an external site e.g. Moodle
When viewing Mahara as a site admin

behatnotneeded

Change-Id: I9bcdbedb235c838e87e208b17eee6a71bf1674d8
Signed-off-by: Lisa Seeto <lisaseeto@catalyst.net.nz>
(cherry picked from commit 30fdf368)