Fixes: #1725.
- Show multiple Wi-Fi devices in separate tables so that users can pick them
understanding what they are. Also avoids some confusion related to why APs are
duplicated.
- Request scanning if the last scan time was long ago.
- Show the last scanned time.
- Refresh page in 10 seconds if scan has been requested so that the results of
scan can be shown without user explicitly refreshing the page. Show spinner when
scan has been requested and we are awaiting results.
- Refresh page every 60 seconds in other cases.
- When an SSID can't be decoded into a string, don't show it.
- Don't show hidden networks with no SSID set.
- Improve the styling for signal strength.
- Show a message when no Wi-Fi devices are present.
- Show a message when no Wi-Fi networks are found for a device.
Tests:
- Test on a machine with Wi-Fi device available.
- When page is loaded is for the first time, spinner is shown and refresh
happens in 10 seconds. After refresh if the scan has not completed, again,
spinner is shown and page is reloaded in 10 seconds. Otherwise, spinner is not
shown and page is reloaded in 60 seconds.
- Hidden networks are not shown.
- On a machine with no Wi-Fi devices, 'No Wi-Fi device detected.' message is
shown.
- Clicking on a network takes us to new Wi-Fi network connection page with
'connection name', 'network interface' and SSID filled in correctly.
Signed-off-by: Sunil Mohan Adapa <sunil@medhas.org>
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