switch auth context processor

the one we reference was deprecated in django 1.2, and removed in 1.4
updating celery and surrounding libs to latest
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' of github.com:dimagi/commcare-hq
Merge branch 'master' into celery-upgrade

Conflicts:
	submodules/core-hq-src
	submodules/dimagi-utils-src
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
Merge pull request #137 from dimagi/mwhite

slight readme change
Merge pull request #138 from dimagi/mwhite

readme markdown syntax fix
set django_templates.fast = True

suggested by http://stackoverflow.com/a/9182798/240554
only concern is some warning of third party tags
and threadsafety that didn't sound like it applies to
us: https://docs.djangoproject.com/en/1.3/ref/templates/api/#loader-types
update corehq
update corehq
Merge branch 'master' into cached-loader
up concurrency from default (# cpus) to 200—it's ok because of gevent + I/O heaviness