* simplify cypress nav menu clicks
* clean unused annotations code
* don't blank all cohorts when deleting one
* add data-test-filters-loading to better target loading indicators in tests
* Unify clickhouse and pg demo data creation
* Adapt yakkos demo data generation to normal demo
* Split demo.py into subfolder
* Add original, web data import
Note that elements are not added because they can't be added
automagically :(.
* Improve wording
* dont generate dashboards
* try get tests passing
* fix types
* Get cypress tests green
