Add mobile optimized pedestrian maps to Nokia/HERE plugin.

The description of the existing pedestrian maps falsely indicated that
they were mobile optimized. The mobile wording has been removed and
actually mobile optimized maps have been added.

Change-Id: I48f7ea043cfbe424508fc783adabef47f283d2e9
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>