Ignore the 'home' directory
Ignore the 'home' directory

This 'home' directory is created by the docubase image for the
sqre/infra/documenteer ci.lsst.codes Jenkins job. Ideally the Jenkins
job should be changed so that this directory isn't present at all, but
for now we can have Sphinx ignore it during the build.

lsst-sqre/documenteer,lsst-sqre/sphinxkit,lsst-sqre/documenteer