switch auth context processor

the one we reference was deprecated in django 1.2, and removed in 1.4
upgrading celery related fixes for submodules for celery 3.x upgrade
Merge branch 'master' into celery-upgrade
setting pool to be gevent for celery job, as well as changing stopwaitsecs to 1 minute instead of 10
Merge branch 'master' into celery-upgrade

Conflicts:
	submodules/core-hq-src
	submodules/dimagi-utils-src
update dimagiutils
update corehq
update corehq
update submodules
update payments
update payments
update corehq
add current_url_name context processor
Merge branch 'master' of github.com:dimagi/commcare-hq
Merge branch 'master' into celery-upgrade

Conflicts:
	submodules/core-hq-src
	submodules/couchexport-src
Merge pull request #135 from dimagi/celery-upgrade

Celery upgrade
celery updates (plus others)
updating heads for danny fixes
slight readme change
Merge pull request #137 from dimagi/mwhite

slight readme change