* Rename filter options in Orders Analytics.
* Sort filter options in labels in Orders Analytics.
* Change filter labels to singular.
* Wider label column to accommodate label change.
* Rename filter options in Variations Analytics.
* Change filter options to Attribute, Category and Product in Variations Analytics.
* Revert "Change filter options to Attribute, Category and Product in Variations Analytics."
This reverts commit b3ca5d5807.
* Change "Add a Filter" to "Add a filter".
* Add changelog.
* Add changelog.
* Refactor getAvailableFilterKeys and getAvailableFilters into one function.
* Add code comment and remove unneeded code.
* Code refactor getAvailableFilters.
This is done by starting from allFilterKeys, and filtering with allowMultiple or not yet active.
With this, we don't need to have `inactiveFilterKeys` and "Ensure filters that allow multiples are always present."
* Fix tests and lint issues.
* Simplify code with Object.entries.