Move code to general fragment, attempt bug fix

Summary:
Move open stop method in GeneralMapLibreFragment.kt

Move common layout in include file Move more code into GeneralMapLibreFragment

Show the bus stop in two ways :'(

Fix crash when lifecycleowner is null (Fix T1375)

Reviewers: valerio.bozzolan

Reviewed By: valerio.bozzolan

Subscribers: valerio.bozzolan, Libre BusTO

Tags: Libre BusTO

Maniphest Tasks: T1375

Differential Revision: https://gitpull.it/D213