* Mega build script improvements 2

* Fix Circle

* Mega build script improvements

* Look for project.clj to determine root directory since we delete .git on CI for speed

* If .git folder is missing (i.e., in CI) fail gracefully

* Don't need to generate version file to run Cypress tests, right?

* Build uberjar step can cache version.properties
(so the Cypress test steps don't need to generate it again)

* Flush caches

* Update uberjar cache key

[ci skip]

instead of passing a link to the Mac app, just pass the query serialized as JSON and let the Mac app send the post request to the API to get the CSV.