Clarify that currently used uniform buffer strides are array strides, and set the default to 16
Clarify that currently used uniform buffer strides are array strides, and set the default to 16

So far none of the uniforms in the shaders have an array stride decoration.  I still
don't have a good understanding of stride handling in OpenGL and Vulkan.

StrayLightning/aeolius,StrayLightning/aeolius,StrayLightning/aeolius