Workaround: disable RenderingEngine test on server.
Workaround: disable RenderingEngine test on server.

The test should eventually be runnable on the server.
However it is ok to disable for now, as the tested scenario is not
relevant for server side rendering.

michael/substance-1,stencila/substance,jacwright/substance,substance/substance,substance/substance,podviaznikov/substance,michael/substance-1,jacwright/substance,andene/substance,podviaznikov/substance,andene/substance