add info about running selenium tests
for org stats
Merge pull request #181 from dimagi/test-docs

add info about running selenium tests
update submodules
update casexml
merge with master
Merge pull request #191 from dimagi/org-stats

for org stats
add hsph test domains
Merge pull request #192 from dimagi/domain-module-map

add hsph test domains
update dimagi-utils
update corehq, vellum
update submodule ref to pact
merge with master
update submodule refs to corehq