Improve Mapbox geoservice plugin

This patch adds standard mapbox map modes so that they could be used
out of the box without the need for specifying it as parameter, and
also adds a QGeoFileTileCache to the plugin, since the Mapbox TOS allow
a limited caching even in the free plan.
The default cache max disk usage has been set accordingly.
The mapbox.map_id parameter is now optional, meaning that things will
work like before if present, but will work with the default mapbox
styles if not.

Change-Id: I4056a3706f47d7f5c46a873c135b743106647fc0
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
Reviewed-by: Michal Klocek <michal.klocek@theqtcompany.com>

0 files changed, 0 insertions, 0 deletions