Move all magic strings that are send out into phrases

[Migaroez]

Example of things that need to be moved
Stop command

• await ReplyAsync("Bingo game stopped by " + Context.User.Mention);
• await Context.User.SendMessageAsync("Can't stop the bingo game: " + result.Info);

How to do this

• Add a key to Constants/PhraseKeys
• Add the current string to Services/ConfigurationService.FallBackPhrases
• Replace the magic string with an async call to ConfigurationService.GetPhrase
  • example with placeholder: string.Format(await _configurationService.GetPhrase(PhraseKeys.Next.Success).ConfigureAwait(false), next.Info)
  • example without placeholder: await _configurationService.GetPhrase(PhraseKeys.Start.AlreadyActive).ConfigureAwait(false)