[#1825] Changed "Bad authentification" to "Authentication Failed".

sflphone-client-gnome/src/accountlist.c

sflphone-client-kde/po/de/sflphone-client-kde.po

sflphone-client-kde/po/es/sflphone-client-kde.po

sflphone-client-kde/po/fr/sflphone-client-kde.po

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

sflphone-client-kde/po/sflphone-client-kde.pot

sflphone-client-kde/po/zh_CN/sflphone-client-kde.po

sflphone-client-kde/po/zh_HK/sflphone-client-kde.po

sflphone-client-kde/src/Account.cpp

sflphone-common/po/de.po

sflphone-common/po/es.po

sflphone-common/po/fr.po

sflphone-common/po/ru.po

sflphone-common/po/sflphone.pot

sflphone-common/po/zh_CN.po

sflphone-common/po/zh_HK.po