Clean test app examples

[Guardiola31337]

Found some issues in the test app examples that would be great to fix 👀

• The layout located at the top of the NavigationViewActivity hides the compass when rotating the map 👀

• The Snackbar shown when MockNavigationActivity is launched hides the FAB momentarily 👀

• It's not clear what is the functionality behind the X FAB included in NavigationMapRouteActivity 👀

• The SummaryBottomSheet animation gets stopped when a gesture occurs which makes the animation feels jumpy in those cases 👀

• Found some leaks reported by LeakCanary which should be fixed.

cc/ @danesfeder @devotaaabel

[Guardiola31337]

• NavigationViewActivity (name) isn't very descriptive because it doesn't actually inflate a NavigationView it uses NavigationLauncher.

[Guardiola31337]

• The SummaryBottomSheet animation gets stopped when a gesture occurs which makes the animation feels jumpy in those cases 👀

It's fixed in 4213ed6 thanks to the new gestures library 🎉

cc @LukasPaczos

[Guardiola31337]

It's fixed in 4213ed6 thanks to the new gestures library 🎉

[devotaaabel]

See comments on #965 for more issues

[devotaaabel]

• Recenter button doesn't hide when instruction view is showing
  

[danesfeder]

This was tackled in multiple PRs, thanks @devotaaabel!

[danesfeder]

@Guardiola31337 pointed out not all of these are tackled - reopening.