Handle Faceit users without EU rank and/or ban properly

[rce]

EU ranking will be None and it can't be compared with int which breaks generating the ranking list. The user in question is also banned ("registration_status": "banned" in JSON) which is probably the reason for missing rank.

Example API call:
https://api.faceit.com/api/nicknames/theKuzu

Example error from !top faceit:

Traceback (most recent call last):
  File "/home/lemon/src/run_lemon_bot.py", line 689, in on_message
    await handler(client, message, arg)
  File "/home/lemon/src/sqlcommands.py", line 536, in cmd_top
    toplist, amountofpeople = await get_faceit_leaderboard()
  File "/home/lemon/src/sqlcommands.py", line 592, in get_faceit_leaderboard
    toplist = sorted(toplist, key=lambda x: x[0])[:10]
TypeError: unorderable types: NoneType() < int()