Dont allow empty passwords.
Dont allow empty passwords.

This fixes Kopete asking for Wallet access when creating a new IRC account and
not setting any password or when opening the IRC account configuration.

svn path=/branches/work/kopete/dev-0.12/kopete/; revision=485247

josh-wambua/kopete,Jtalk/kopete-fork-xep0136,josh-wambua/kopete,josh-wambua/kopete,Jtalk/kopete-fork-xep0136,Jtalk/kopete-fork-xep0136,Jtalk/kopete-fork-xep0136,josh-wambua/kopete,Jtalk/kopete-fork-xep0136,josh-wambua/kopete,Jtalk/kopete-fork-xep0136,josh-wambua/kopete,josh-wambua/kopete