Fix case explode on cases with attachments
Remove {} from namespace in helper
PEP8
add abilitiy to exclude attachments in copy_domain
add test for exploding cases xml
Update commcare-settings-layout.yaml

Fixed fuzzy-search property id
Update commcare-profile-settings.yaml
Merge pull request #4403 from dimagi/fuzzy-search-fix

Fuzzy search fix
update submodules
Catch improperly formatted column headers
downgrade user account 500 to 404

when the user for a user id does not exist
Merge pull request #4406 from dimagi/fixtures-error

Catch improperly formatted column headers
Merge pull request #4407 from dimagi/downgrade-500-to-404

downgrade user account 500 to 404
Fall back to infix search on basic queries

If query does not use the ES query string syntax default to doing an infix search for each term.
update staging.yaml

[ci skip]
Merge pull request #4391 from dimagi/exclude-attachments

add abilitiy to exclude attachments in copy_domain
change proxy to proxy3 (new failover)
Merge pull request #4412 from dimagi/proxy3

change proxy to proxy3 (new failover)
Add basic docs for elasticsearch
Add docs on updating ES mappings