FKED-90: Add support for deleting experiences 💥

[techninja]

FKED-90: As a user I'd like to delete experiences

This PR does the following:

• Adds a new UI button on the experience
• Adds a new action, API method, and reducer for removing experiences

To Review:

• Checkout this branch.
• Run yarn start.
• Login, and on the central dashboard, create a new experience (to be deleted momentarily).
• See that your new experience is listed with the rest of your experiences, and that each has a new "delete" button listed with helpful hover text
• Click the delete button on the new experience, and see that you are presented with a modal warning dialog that you must accept.
• Click cancel to see that the experience is untouched.
• Click delete again and after clicking OK, see that the experience is removed from the list.
• Refresh the page and see the deleted experience is truly removed from server fetches

[patrickocoffeyo]

@techninja this code looks good. Will do a functional pass when I get a chance to boot into Windows :)