ajax.php cleanup
dev/rig-details
fix/switch-pool-modal

-Styling fixes
- Allow port numbers to display (some pools have different ports for
different diffs)
- Mobile responsiveness
fix/switch-pool-modal

- Removed commented out column
dev/rig-details

- Added ajax-saver png, use CSS to animate
- added JS and more inputs to form
- TOAST message appears if no devices found for a rig.