* added tests to verify flow.
* refactoring picker reducer.
* made all the tests green.
* removed console.log's
* fixed toggle all and making sure the correct values are set on picker open.
* added more tets.
* refactored and added table tests.
* fixed so we select values from selectedValues instead of options.
* fixed so you can navigate and select even after you have filtered a variable.
* adding tests to verify flows when toggling by highlight.
* fixed so enter always selects value before closing.
* improved the code for tags.
* Refactor: moves all the newVariables part to features/variables directory
* Feature: adds datasource type
* Tests: adds reducer tests
* Tests: covers data source actions with tests
* Chore: reduces strict null errors
