codeclistmodel + asynchronous loading of address book + enable/disable address book

sflphone-client-kde/po/ru/sflphone-client-kde.po

sflphone-client-kde/src/Codec.cpp

sflphone-client-kde/src/CodecListModel.cpp

sflphone-client-kde/src/CodecListModel.h

sflphone-client-kde/src/SortableCodecListWidget.cpp

sflphone-client-kde/src/SortableCodecListWidget.h

sflphone-client-kde/src/conf/ConfigurationDialog.cpp

sflphone-client-kde/src/conf/ConfigurationDialog.h

sflphone-client-kde/src/conf/ConfigurationSkeleton.cpp

sflphone-client-kde/src/conf/ConfigurationSkeleton.h

sflphone-client-kde/src/conf/dlgaccounts.cpp

sflphone-client-kde/src/conf/dlgaddressbookbase.ui

sflphone-client-kde/src/conf/dlgaudio.cpp

sflphone-client-kde/src/conf/dlgaudio.h

sflphone-client-kde/src/conf/dlgaudiobase.ui

sflphone-client-kde/src/conf/dlgrecord.cpp

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

sflphone-client-kde/src/main.cpp

sflphone-client-kde/src/sflphone_const.h

sflphone-client-kde/src/sflphone_kdeview.cpp