* Removed depemdency to unicode example in tests config.
* Added common methods for creating dashboards for tests.
* Added fixtures to all tests which were using unicode example.
* Added cleanup for unicode_test table
* Removed unnecessary fixture parts of unicode dashboard tests
* Parametrized creating slice for tests
* Moved fixtures for unicode test to separate file and refactored to several methods. Added param types and return types.
* Cleandup after fix
* Changed variable names to more readable
* Added cleanup for dashboards and slices
* Applied unicode fixture to charts api tests
* Update schema variable to dtype in dashboard utils
Co-authored-by: Ville Brofeldt <33317356+villebro@users.noreply.github.com>
* Changed variable schema to dtype in dashboards. Replaced accessing first element with one_or_none
Co-authored-by: Ville Brofeldt <33317356+villebro@users.noreply.github.com>