[QA] Multiple selection unselect

[brauliodiez]

Scope of the tests

We are going to select multiple elements (using drag and drop), then selecting on a empty area it should unselect all

Preconditions:

• Navigate to the mock design page (localhost environment).
• Components gallery must be present.
• The canvas area must be ready for interaction

Test steps (video, request access if you are going to work on this case), automate this:

https://drive.google.com/open?id=1IwiLybQQY2tc1tZuIilzq_SpSwTFAqH8&usp=drive_fs

Expected result

• No items are selected