Straight forward port from QJson to the native Json support.
As a note I have added 2 helper functions that make the code bit more
readable (object2qvariant and qvariatn2qobject).
Ported using KDELibs4Support, for a smaller delta, so we can keep
developing on master until we decide not to.
At the moment, it builds and installs but tests don't pass because
of a QCA2 initialization problem I didn't manage to debug yet.
CCMAIL: kdeconnect@kde.org
Fixed some bugs in the pairing process state machine
Keys are now stored in base64 in KConfig (was storing non-allowed chars)
Updated NetworkPackage tests to include encryption
Increased networkpackage version 1 -> 2
MPRIS now uses xml dbus interfaces-
MPRIS now detects when properties like volume or playbas status change.
Link providers now emit connectionLost and connectionReceived, like in Android.
Disabled connection notifications.
Added some missing const modifiers.
Splitted up ping receiver from notification receiver in KDE
Improved pausemusic receiver
Fixed same computer being discovered multiple times
Fixed some other minor bugs and compilation warnings
