First cut at test for stateManager/world. Test data for REST responses factored out into separate file for shared use by Universe and World tests. Also cleaned up some debugging code.
Jest tests for part of util/stateManager
* reorganize test directories
* lint
* add Jest config to eslint
* add Jest config to eslint
* lint
* fix babel configuration for tests
* start at kvCache tests
* reorganize test directories
* lint
* add Jest config to eslint
* add Jest config to eslint
* lint
* fix babel configuration for tests
* start at kvCache tests
* fix cache flush bug manifest by new test cases
* new kvCache tests
* skeletal universe test
* fix race in test case
* more universe test cases
Fixes the build error in the old version.
Reverted the API version since we changed directions from updating the API to refactoring the server structure instead.