Refactor AccountModel::setData to use setter functions.
Refactor AccountModel::setData to use setter functions.

mck182/telepathy-qt4-yell,freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell,freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell,mck182/telepathy-qt4-yell,mck182/telepathy-qt4-yell,mck182/telepathy-qt4-yell,freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell,freedesktop-unofficial-mirror/telepathy__telepathy-qt4-yell