[ #10222 ] Fix minor itches and bugs

kde/src/AccountView.cpp

kde/src/CallView.cpp

kde/src/SFLPhone.cpp

kde/src/SFLPhoneView.cpp

kde/src/SFLPhoneView.h

kde/src/conf/ConfigAccountList.cpp

kde/src/conf/dlgaccounts.cpp

kde/src/conf/sflphone-client-kde.kcfg

kde/src/lib/Account.cpp

kde/src/lib/AccountList.cpp

kde/src/lib/CallModel.cpp

kde/src/lib/CallModel.h

kde/src/lib/CallModel.hpp

kde/src/lib/sflphone_const.h

kde/src/widgets/ContactDock.cpp

kde/src/widgets/HistoryDock.cpp

kde/src/widgets/HistoryTreeItem.cpp