Also don’t pop errors for initial request failure on generic vehicle.

- Max tile download count now handled here
- Fixed signaling problems

* travis-ci install gstreamer

* update linux gstreamer dependencies

* fixes #2540

* travis-ci doxygen to trusty

- Mobile large
- Desktop default

Was too hard to click

width/height must be specified by user name

- Offline maps new set defaults to default map type
- Plan/Fly views use MapScale control