testsuite: Fix test that was committed in a broken state

1) Use font-size instead of color
This makes it easier to compare reference and test because the values
don't change.

2) Actually sort the reference properly
This unbreaks the test.
MSVC Builds: Finish Removal of the gtk-inspector Projects

The files for build of GtkInspector have been intergrated into the build of
the main GTK+ DLL, and the Visual Studio project templates for those have
been removed as well.  Make that removal complete by removing from the
solution files references to it and make the 'gtk' project not to depend on
the gtk-inspector project.