Comment 59 for bug 1451728

Note to KDE Ubuntu/Debian maintainers: as I understand it, a fix landed into the latest kaccounts-integration release and consists of a path change in a cmake configuration file, which is then read by kaccounts-plugins. So, both of these packages need to be updated in Ubuntu.

Also, while those changes solve the conflicts with the files installed under /usr/share/accounts/, there remain conflicts on /etc/signon-ui/webkit-options.d/. But on this case, the files installed by kaccounts-plugins are the same installed by the Unity account-plugins package.
Therefore, I'd suggest removing those files as part of dh_install, and instead add a dependency on account-plugins.