Fixing issues with qtnamespace builds and header tests.

Wrong order of QT_BEGIN_NAMESPACE fixed.
Remaining QObject pointers converted to QJSValues
to prevent failures on those.
Adds copyright headers to the Qt Creator templates.
Tests separated to different test files to getbetter test results.

Change-Id: I5c916a5f464c70cc66c8cfc529d83f47367aa7a4
Reviewed-by: Pasi Keränen <pasi.keranen@digia.com>