Refactor

Component(s) to be refactored

• /api/island-mode

Tasks

• Rename to /api/island/mode (0d) @ilija-lazoroski
• Change POST to PUT (0d) @ilija-lazoroski
• Use HTTPStatus enum for return codes (0d) @ilija-lazoroski
  • See if you can just return the status with no body
  • Use 204 instead of 200 for PUT
• Get rid of ['mode'] in api/island/mode and all uses. (0.25d) @ilija-lazoroski
  • Add IslandMode to resources/__init__.py and shorten all imports