Removed user_id filter from the query that CaseListMixin performs.
first buttons
Style buttons according to mockup
Parse url params in one place
Move meta_users call to a separate method
Abstract away parsing of URL parameters in emwf
Make CommTrack user default not index-dependant
Make [All Data] option not a user type
ESQuery changes - fix default size, misc additions
Replace es_query with ESQuery (fixes WebUser bug)
Undo excess refactor
Bring tests into line with API changes
minor bugfix
update staging.yaml

[ci skip]
Merge branch 'master' into app-buttons
Merge pull request #3989 from dimagi/app-buttons

App buttons
Add checkpoints for debugging
Raise a proper AttributeError if method not found
update staging.yaml

[ci skip]
Add 403 page template