[NEW] Web UI should be able to delete global stores

[thomasmitchell]

Is your feature request related to a problem? Please describe. I want to delete a global storage system, but in a primarily click based way.

Describe the solution you'd like When you go to the page for the storage system, have there be a delete button. When you click it, it should say ARE YOU HECKIN SURE? Then you say yes and then its gone.

Describe alternatives you've considered Using the CLI

[thomasmitchell]

It seems like this is possible, but not for global storage systems.