fmbtandroid: added status/navigation bar visibility
fmbtandroid: added status/navigation bar visibility

Added device.statusBarVisible() and device.navigationBarVisible()

mixu-/fMBT,01org/fMBT,acozzette/fMBT,heivi/fMBT,giantpinkwalrus/fMBT,yoonkiss/fMBT,yoonkiss/fMBT,rseymour/fMBT,heivi/fMBT,giantpinkwalrus/fMBT,pombreda/fMBT,violep01/fMBT,violep01/fMBT,violep01/fMBT,mixu-/fMBT,giantpinkwalrus/fMBT,pombreda/fMBT,mlq/fMBT,heivi/fMBT,pombreda/fMBT,pombreda/fMBT,acozzette/fMBT,heivi/fMBT,violep01/fMBT,yoonkiss/fMBT,pombreda/fMBT,giantpinkwalrus/fMBT,mixu-/fMBT,yoonkiss/fMBT,mlq/fMBT,01org/fMBT,pombreda/fMBT,mlq/fMBT,mlq/fMBT,rseymour/fMBT,rseymour/fMBT,heivi/fMBT,giantpinkwalrus/fMBT,rseymour/fMBT,mixu-/fMBT,acozzette/fMBT,mlq/fMBT,pombreda/fMBT,mlq/fMBT,rseymour/fMBT,mlq/fMBT,yoonkiss/fMBT,01org/fMBT,rseymour/fMBT,violep01/fMBT,heivi/fMBT,01org/fMBT,rseymour/fMBT,heivi/fMBT,01org/fMBT,mixu-/fMBT,acozzette/fMBT,acozzette/fMBT