Added implementation to integrate with the xdg freedesktop.org.
Added tests for the xdg integration.
Removed the QJson dependency.
Merge pull request #4 from mandel-macaque/xdg-support

Xdg support
Merge pull request #5 from mandel-macaque/remove-qjson

Removed the QJson dependency.
Merged with master.
Merge branch 'accounts-dbus-service' into accounts-oauth