* WIP: Adds basic template variables CRUD start

* e2eTests: Adds aria-labels in VariableEditorCtrl

* Refactor: Simplifies a bit

* e2eTests: Adds first Template Variable CRUD for QueryVariable

* Tests: Adds ArrayPageOjbectType

* Tests: Adds createQueryVariable method

* Tests: Refactor CRUD test

* Tests: Adds datasource and dashboard to scenario

* Refactor: Fixes type errors

* Refactor: Move pages to toolkit