Check API key button implementation

[bajiat]

Check that the Get API key button on the API profile page works properly with Multiproxy implementation.
Note: Most of the task is probably double checking current implementation

Definition of done

• Get API key button is only available in API profile view, if API is connected to a proxy.
• If user presses Get API key
  • the API key comes from the connected proxy.
  • the key is updated for all APIs connected to that proxy
  • Copy API key button will be available for all APIs connected to that proxy
  • for any APIs connected to another proxy, the Get API key button is still available in the API profile view.

[jykae]

Interested

[bajiat]

Consider API-specific API keys

[jykae]

@bajiat As all our requests go straight to API Umbrella, API key checks are handled on API Umbrella.
I added question if it would be possible restrict the usage of API backend per API key
NREL/api-umbrella#302

I am first going for functionality defined above.