Qmake couldn't handle shared sources so make each app have
their own copy of application viewer sources again.
Change-Id: I6ee1948c91b5cc41bdd69237b106d3bfe935226c
Reviewed-by: Tomi Korpipää <tomi.korpipaa@digia.com>
- re-enabled demos
- fixed the include files in demos folder
- f1legends example has some issue with the axes (they are not shown until window is resized)