Issue #2188721 by Cottser, aspilicious: Theme suggestions don't load necessary include files.
Issue #2207907 by chx: Comment stubbing is broken.
Issue #2034975 by kay_v, linclark, krlucas: Test RDFa output in email formatter.
Issue #1778410 by linclark, ashepherd, Stefan Freudenberg, tim.plunkett, kay_v, adorsk: Throw exception when RDF namespaces collide.
Issue #1992954 by lokapujya, sphism, cwells, djevans, Stefan Freudenberg, Gaelan: Trimming of long usernames results in incorrect RDF.