Try fixing mayhem of location permissions, and fragments viewing

Summary:
Try fixing mayhem of location permission

Fix persistent problem of fragment already added, and restore correctly states of Fragments (especially LinesFragment)

Larger accuracy limit for GPS

Reviewers: valerio.bozzolan

Reviewed By: valerio.bozzolan

Subscribers: valerio.bozzolan, Libre BusTO

Tags: Libre BusTO

Differential Revision: https://gitpull.it/D97