Fix GUI freeze when TVService is not accessible.
Catch exception and fix freeze on Guide.
Rework loading of TV/Setting to avoid duplicate notification and duplicate loading.
Rework loading of TV/Setting to avoid duplicate notification and duplicate loading.
Merge remote-tracking branch 'remotes/upstream/MP1-2559-Solve_inconsistent_TVService_detection_from_TVServer_in_TVHome' into 1.4.0Fork_SEB_New_Master