v1.2.0: Remove the `inactive` item from groups list

New features

• User can specify a password when Signing up
• Introduce user groups in account management views

Enhancements

• Hide some not available actions for some nodes, like pycom, open-node-rpi3, lora-gw or rtl-sdr
• Various UI improvements
  • reduce some titles or change sizes

Bug fixes

• Accept all character from websockets
• Stop polling the API on first error from the Dashbord
• Remove borders around links from the testbed navbar under Firefox

Internal

• Replace pending notion with inactive
• Remove the inactive state from the groups list for listing users (admin view)