Right now the user uploaded static files are in the source tree, /static/m/user,
iirc.  This causes problems when we chmod the source tree so we can git pull; it
seems we invariably forget to re chmod the static directory so that www-data can
write to it (and people can upload their photos).

It'd be nice if these files were located outside of the source tree or if we had
the umask set so that we didn't have to chmod in the first place.