Add HTTP_HOST to environ variables mocked. Also add license headers to run.py.
Add HTTP_HOST to environ variables mocked. Also add license headers to run.py.

--HG--
extra : rebase_source : 8c169b25242346cf4d3211f8ba754aa0b308d1ed

SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange,SRabbelier/Melange