Additional tests for OBJ loading.
Fixed a bug that messed up render parameters.

In the course of applying map everywhere, I accidentally overwrote ownRenderParameters where I meant ownRenderParameterDescriptions.
Test to verify previous bug fix.
Fixed issue with first selection change not appearing.

I guess the comments are wrong now, though.
Reduce sample count to value that's acceptable on all target devices.

According to the OpenGL Capability Tables, several graphics cards support only four samples instead of eight, so stick with that.
Specify color buffer, use normal alpha blending

Another attempt to get at the bottom of bug #5.