[timed] Add Qt5Network/qt5-qtnetwork-devel to Qt5 build requirements
Add Qt5Test/qt5-qttest-devel to Qt5 build requirements
Remove gui module from tests
Fix iodata-qt5 includes
Include iodata::validator when using iodata::storage
Add QtGlobal to get QT_VERSION
Link to correct library when building for Qt4 or Qt5
Link to correct library and use proper target name with Qt4/Qt5
Add missing include
Disable ContextProvider from Qt5 build
Fix iodata includes and use correct parameter type
Store return value of QObject::connect to a bool

Qt5 returns a QMetaObject::Connection from QObject::connect,
which can be cast into a bool to check whether the connection
was successful.
Update server build setup for Qt4/Qt5 builds
Update voland build setup for Qt5 build
Fix server build setup for Qt5
Set voland library name correctly when building for Qt5
Use correct path for voland library setup for Qt5
Update tests to build properly with Qt5