[#1855] Copy translation files into both clients dirs

lang/README

lang/de/sflphone.po

lang/es/sflphone.po

lang/fr/sflphone.po

lang/ru/sflphone.po

lang/sflphone.pot

lang/zh_CN/sflphone.po

lang/zh_HK/sflphone.po

sflphone-client-gnome/po/de/sflphone-client-gnome.po

sflphone-client-gnome/po/es/sflphone-client-gnome.po

sflphone-client-gnome/po/fr/sflphone-client-gnome.po

sflphone-client-gnome/po/ru/sflphone-client-gnome.po

sflphone-client-gnome/po/zh_CN/sflphone-client-gnome.po

sflphone-client-gnome/po/zh_HK/sflphone-client-gnome.po

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/zh_CN/sflphone-client-kde.po

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