ui fixes
fix crash participantCore
fix account name on init
fix #LINQT-1366
fix #LINQT-1380
try to fix #LINQT-1379 (new call : crash when ending the call before remote answers)
fix #LINQT-1285 fix call notif deletion
fix #LINQT-1283 : reset views when switching tab or creating new call
fix #LINQT-1287 pause logo on pause
fix #LINQT-1281 clear vertical tabbar index if in settings